Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 167,672 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.
Dr. James Robert Erskine-Murray (1868-1927) of Clark Forde, Taylor and Erskine-Murray, and later Experimental Engineer at H.M. Signal School, Portsmouth.
1918 of Wireless Experimental Establishment at Biggin Hill; patent on electric vacuous bulb thermionic devices[1]
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