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Patents for Inventions, Fifty Years Subject Index 1861-1910: Classes 1-37

Great Britain. Patent Office

Published: 1915

Total Pages: 1026

Patents for Inventions, Fifty Years Subject Index 1861-1910: Classes 38-70

Great Britain. Patent Office

Published: 1913

Total Pages: 1002

Patents for Inventions. Fifty years subject index, 1861-1910

Great Britain. Commissioners of Patents

Published: 1915

Total Pages:

Patents for Inventions, Fifty Years Subject Index 1861-1910: Classes 98-120

Great Britain. Patent Office

Published: 1913

Total Pages: 1020

Patents for Inventions, Fifty Years Subject Index 1861-1910: Classes 121-146

Great Britain. Patent Office

Published: 1913

Total Pages: 914

Patents for Inventions, Fifty Years Subject Index 1861-1910

Great Britain. Patent Office

Published: 1913

Total Pages:

Patents for Inventions. Abridgments of Specifications

Great Britain. Patent Office

Published: 1920

Total Pages: 1078

Patents for inventions

Published: 1932

Total Pages: 452

Manual of Foreign Patents

Belknap Severance

Published: 1935

Total Pages: 188

Journal of the Patent Office Society

Patent Office Society (U.S.)

Published: 1933

Total Pages: 1050