18th December 1959, Page 72
18th December 1959
Page 72

Page 72, 18th December 1959
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Rotary Valve Gear
P - 1 A ROTARY valve is the subject of patent No. 819,264. (A. Fisker and A. Rasmussen, No. 7. V.E. Gamborgsvej, Copenhagen-Frederiksberg, Denmark.) The invention is claimed to......