Pressure-operated valve means for free piston engines
United States Patent 2811958

Inventors:
Roush Jr., Roy W.
Publication Date:
11/05/1957
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Assignee:
GEN MOTORS CORP
Primary Class:
123/46R
Other Classes:
251/245, 417/340, 251/58, 251/63.500
International Classes:
F01B11/00; F02B71/00; F02D39/10; F02D39/00
Foreign References:
GB475730A