Grace's Guide

British Industrial History

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 147,190 pages of information and 233,425 images on early companies, their products and the people who designed and built them.

National Patent Co

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April 1903.
1913.
1938.
1945.
1951.

National Patent Co Ltd. of Johnstone, Renfrewshire, Scotland.

c1872 Company established.

1938 Mole traps, mouse traps.

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