Index of Patents : issued from the United States Patent Office 1967 : pt. 2. Index to subjects of in

Index of Patents : issued from the United States Patent Office 1967 : pt. 2. Index to subjects of in

出版社：Wash. : U.S. Government Printing Office, 1968

出版年：1968

作者：United States Patent Office.

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Index of patents : issued from the United States patent and trademark office, 1974 : pt. 2. Index to

作者：U.S. Department of Commerce
出版社：Wash. : U.S.GPO, 1975
出版年：1975

Index of patents : issued from the United States Patent Office 1965 : pt. 1. List of patentees

作者：United States Patent Office.
出版社：Wash. : U.S. Goverment Printing Office, 1966
出版年：1966

Index of patnets : issued from the United States Patent Office 1967 : pt. 1. List of patentees

作者：United States Patent Office.
出版社：Wash. : U.S. government Printing Office, 1968
出版年：1968

Index of patents issued from the United States Patent and Trademark Office.

作者：United States.
出版社：[Washington] U.S. Dept. of Commerce, Patent and Trademark Office; for sale by the Supt. of Docs., U.
出版年：1973

Index of patents issued from the United States Patent Office 1970.

作者：U.S.
出版社：Wash. : Govt. Print. Off., 19 -

Index of patents issued from the United States Patent Office, 1960.

作者：U.S.
出版社：Wash. : Govt. Print. Off., 1961.
出版年：1961