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公开(公告)号：US2800336A
公开(公告)日：1957-07-23
申请号：US48584555
申请日：1955-02-03
Applicant: JOHN C HOLDGATE
Inventor： MAJOR SEELEY L , LIPPIATT ROY E
CPC classification number: B62B1/10 , B62B3/009 , B62B2301/00 , B62B2301/02
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