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21. Index of patents issued from Patent Office, 1961.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: 1962
SuDoc number:: C 21.5/2:961

22. Index of patents issued from Patent Office, 1960.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: 1961
SuDoc number:: C 21.5/2:960

23. Index of patents issued from Patent Office, 1959.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: 1959
SuDoc number:: C 21.5/2:959

24. index of patents issued from Patent Office, 1958.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: 1959
SuDoc number:: C 21.5/2:958

25. Index of patents issued from Patent Office, 1957.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: 1958
SuDoc number:: C 21.5/2:957

26. Index of patents issued from Patent Office, 1956.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: 1957
SuDoc number:: C 21.5/2:956

27. Index of patents issued from Patent Office, 1955.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: 1956
SuDoc number:: C 21.5/2:955

28. Index of patents issued from Patent Office, 1954.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: 1955
SuDoc number:: C 21.5/2:954

29. Index of patents issued from Patent Office, 1952.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: 1953
SuDoc number:: C 21.5/2:952

30. Index of patents issued from Fatent Office, 1951.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: 1952
SuDoc number:: C 21.5/2:951

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