30th September 1932, Page 68
30th September 1932
Page 68
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Page 68, 30th September 1932
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Automatically Variable Compression
A Resurn of Recently Pub , lished Patent Specifications T EM patent No. 379,169, of 0. S. Ruud, Torsgate 2, Oslo, Norway, points out that engines have been made in which the......