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  1. 41
    Classification bulletin of U.S. Patent Office for months of Jan.-Apr. 1903, containing classification of subjects of invention revised by Classification Division of U.S. Patent Office.
    Published 1903
    “...United States. Patent Office...”
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  2. 42
    Classification bulletin of U.S. Patent Office for months of May-June 1903, containing classification of subjects of invention revised by Classification Division of U.S. Patent Office.
    Published 1903
    “...United States. Patent Office...”
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  3. 43
    Classification bulletin of U.S. Patent Office for months of July-Sept., 1903, containing classification of subjects of invention revised by Classification Division of U.S. Patent Office.
    Published 1903
    “...United States. Patent Office...”
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  4. 44
    Classification bulletin of U.S. Patent Office for months of Oct., Nov., and Dec. 1903, containing classification of subjects of invention revised by Classification Division of U.S. Patent Office.
    Published 1903
    “...United States. Patent Office...”
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  5. 45
    Classification bulletin of U.S. Patent Office for months of Jan., Feb., Mar., Apr., and May 1904, containing classification of subjects of invention revised by Classification Division of U.S. Patent Office.
    Published 1904
    “...United States. Patent Office...”
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  6. 46
    Classification bulletin of U.S. Patent Office for months of June-Sept. 1904, containing classification of subjects of invention revised by Classification Division of U.S. Patent Office.
    Published 1904
    “...United States. Patent Office...”
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  7. 47
    Classification bulletin of U.S. Patent Office for months of Oct. 1904-June 1905, containing classification of subjects of invention revised by Classification Division of U.S. Patent Office.
    Published 1905
    “...United States. Patent Office...”
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  8. 48
    Classification bulletin of U.S. Patent Office from July 1, 1905 to June, 30, 1906, containing classification of subjects of invention revised by Classification Division of U.S. Patent Office.
    Published 1906
    “...United States. Patent Office...”
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  9. 49
    Classification bulletin of U.S. Patent Office from July 1, 1906 to Dec. 31, 1906, containing classification of subjects of invention revised by Classification Division of U.S. Patent Office.
    Published 1907
    “...United States. Patent Office...”
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  10. 50
    Classification bulletin of U.S. Patent Office from Jan. 1, 1907 to June 30, 1907, containing classification of subjects of invention revised by Classification Division of U.S. Patent Office.
    Published 1907
    “...United States. Patent Office...”
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  11. 51
    Official gazette of U.S. Patent Office : Supplement to Vol. 93, containing classification of subjects of invention, revised and published between July 1, and Dec. 31, 1900.
    Published 1900
    “...United States. Patent Office...”
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  12. 52
    Classification bulletin of U.S. Patent Office from July 1, 1907 to Dec. 31, 1907, containing classification of subjects of invention revised by Classification Division of U.S. Patent Office.
    Published 1908
    “...United States. Patent Office...”
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  13. 53
    Classification bulletin of U.S. Patent Office, from Jan. 1, 1908 to June 30, 1908, containing classification of subjects of invention revised by Classification Division of U.S. Patent Office.
    Published 1908
    “...United States. Patent Office...”
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  14. 54
    Classification bulletin of U.S. Patent Office from July 1, 1908 to June 30, 1909, containing classification of subjects of invention revised by Classification Division of U.S. Patent Office.
    Published 1911
    “...United States. Patent Office...”
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  15. 55
    Classification bulletin of U.S. Patent Office from July 1, 1909 to Dec. 31, 1909, containing classification of subjects of invention revised by Classification Division of U.S. Patent Office.
    Published 1910
    “...United States. Patent Office...”
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  16. 56
    Official gazette of U.S. Patent Office : Supplement to Vol. 95, containing classification of subjects of invention, revised and published between Jan. 1 and June 30, 1901.
    Published 1901
    “...United States. Patent Office...”
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  17. 57
    Official gazette of U.S. Patent Office : Supplement to Vol. 97, containing classification of subjects of invention, revised and published between July 1 and Dec. 31, 1901.
    Published 1901
    “...United States. Patent Office...”
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  18. 58
    Classification bulletin of U.S. Patent Office for months of Jan. and Feb. 1902, containing classification of subjects of invention revised by Classification Division of U.S. Patent Office.
    Published 1902
    “...United States. Patent Office...”
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  19. 59
    Classification bulletin of U.S. Patent Office for months of Mar. and Apr. 1902, containing classification of subjects of invention revised by Classification Division of U.S. Patent Office.
    Published 1902
    “...United States. Patent Office...”
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  20. 60
    Classification bulletin of U.S. Patent Office for months of May and June 1902, containing classification of subjects of invention revised by Classification Division of U.S. Patent Office.
    Published 1902
    “...United States. Patent Office...”
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