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公开(公告)号:US2603452A
公开(公告)日:1952-07-15
申请号:US8546549
申请日:1949-04-04
申请人: JOHN KIRK , OLLIE JONES , CHARLES J JONES , THOMAS G JONES , RICHARD G BAENDER , CHARLOTTE F WEBB
发明人: SPINNEY FRANK R
IPC分类号: F04B53/10
CPC分类号: F04B53/1017 , F04B53/1032 , Y10T137/7919 , Y10T137/7937