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公开(公告)号：US2771093A
公开(公告)日：1956-11-20
申请号：US32807352
申请日：1952-12-26
Applicant: WILSON HARRY O
Inventor： WILSON HARRY O
CPC classification number: F15B21/044 , B60T11/30 , F16D2125/16 , Y10T137/7613 , Y10T137/7936 , Y10T137/8803
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公开(公告)号：US2263911A
公开(公告)日：1941-11-25
申请号：US26431939
申请日：1939-03-27
Applicant: WILSON HARRY O
Inventor： WILSON HARRY O
CPC classification number: B63H16/14
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