23rd February 1934, Page 62
23rd February 1934
Page 62

Page 62, 23rd February 1934
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Hydraulic Operation Of Engine Valves
A Risumi of Patent Specifica. (ions That Have Recently Been Published N OVEL proposals are made in patent No. 404,426, by A. J. and G. R. Thatcher, both of Atworth, Melkshara,......