8th January 1937, Page 51
8th January 1937
Page 51
Page 51, 8th January 1937
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The Latest Ricardo Combustion Head
T HE subject of patent No. 457.4E4 is a new oil-engine combustion head by that well-known specialist, H. R. Ricardo, 21, Suffolk Street, London, S.W.1, and in this case the......