15th March 1935, Page 60
15th March 1935
Page 60
Page 60, 15th March 1935
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Progress In Hydraulic Couplings
F ROM Dr. log. Wach, 57, See . strasse, Kilcbberg-Zurich, Switzerland, comes patent . No. 423,347, describing the results of researches into hydraulic couplings of the Fottinger......