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 143,440 pages of information and 230,058 images on early companies, their products and the people who designed and built them.

Patent Motor Products Co

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September 1927.
October 1931.
1950.

of 6 Upper Marylebone Street, Great Portland Street, London W1

  • 1937 Engine jointing manufacturers. "Hermeticoll" Liquid Engine Jointing. [1]

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