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Index of Patents Issued from the United States Patent Office
pt. 1. List of patentees.--pt. 2. Index to subjects of inventions.
Physics Briefs
None
National Union Catalog
Includes entries for maps and atlases.
Researchers
Includes governmental policy, development, science and technology, environmental, finance, health and welfare, industrial, agriculture, forestry and fisheries, international trade, transportation, telecommunications, labor, construction, and home affairs agencies.
