Classification of U.S. patents.

Classification of U.S. patents.

出版社：Wash. : [s.n.], 1960

出版年：1960

作者：U.S. Department of Comerce. Patent Office.

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细分类型：西文文献

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Index of Patents/U.S. Government

作者：U.S. Government
ISBN：CNY3.40
出版社：Washington : U.S. Government Printing Office, 1974
出版年：1974

Commercial food patents, U.S., 1976

作者：Neoth,Hallie B.
出版社：Arlington : North, 1977
出版年：1977

Index of Patents/U.S. Government

作者：U.S. Government
出版社：Washington : U.S. Government Printing Office, 1974
出版年：1974

Retrieval index and abstracts of U.S. patents knitting machinery (1975)

作者：Lexington Data,Inc.

Index of Patents Part1:List of Patentees/U.S. Government

作者：U.S. Government
出版社：Washington : U.S. Government Printing Office, 1974
出版年：1974

Catalog of government patents-1983 : inventions available for licensing by U.S. business.

ISBN：0000000000
出版社：Springfield : National Technical Information Service, c1984.
出版年：1984