Grace's Guide To British Industrial History

Registered UK Charity (No. 115342)

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 162,253 pages of information and 244,496 images on early companies, their products and the people who designed and built them.

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 147,919 pages of information and 233,587 images on early companies, their products and the people who designed and built them.

John Gray (1874-1935)

From Graces Guide

John Gray (1874-1935), an Electrical engineer and director of BTH

1917 Patent department of BTH[1]

See Also

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Sources of Information

  1. The Engineer 1917