British Duplex Motor Engine Syndicate
From Graces Guide
1909 December. Letter claiming the rights to the Kelly Duplex Engine and how that of J. H. Hopkins may infringe those rights.[1]
See Also
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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 167,669 pages of information and 247,074 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.