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31. Index of patents issued from Patent Office, 1950.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: 1951
SuDoc number:: C 21.5/2:950

32. Index of patents issued from Patent Office, 1949.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: 1950
SuDoc number:: C 21.5/2:949

33. Index of patents issued from Patent Office, 1948.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: 1949
SuDoc number:: C 21.5/2:948

34. Index of patents issued from Patent Office, 1947.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: 1948
SuDoc number:: C 21.5/2:947

35. Patents. Index of patents issued from Patent Office, 1946.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: 1947
SuDoc number:: C 21.5/2:946

36. Patents. Index of patents issued from Patent Office, 1945.

Corporate/Agency Authors:: Patent Office
Publisher:: Patent Office
Date:: 1946
SuDoc number:: C 21.5/2:945

37. Patents. Index of patents issued from Patent Office, 1944.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: 1945
SuDoc number:: C 21.5/2:944

38. Patents. Index of patents issued from Patent Office, 1943.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: 1944
SuDoc number:: C 21.5/2:943

39. Patents. Index of patents issued from Patent Office, 1942.

Corporate/Agency Authors:: Patent Office
Publisher:: Patent Office
Date:: 1943
SuDoc number:: C 21.5/2:942

40. Patents. Index of patents issued from Patent Office, 1941.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: 1942
SuDoc number:: C 21.5/2:941

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