Bertram G. Calver
From Graces Guide
Bertram G. Calver
1920 A new locking device for detachable wheels. Of 52 Linver Road, London SW6
1922 New Valveless Two-Stroke Engine. Of 52 Linver Road, Hurlingham, London SW.
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Grace's Guide To British Industrial History
Registered UK Charity (No. 1154342)Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 174,143 pages of information and 250,321 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.