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 147,919 pages of information and 233,587 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.

High Vacuum Valve Co

From Graces Guide
1935. Hivac.
1935. Hivac.

of Farringdon Road, London

Previously Freedman Valve Co

1930-33 Paul Freedman was MD

Name changed to Hivac.

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