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公开(公告)号：US2747272A
公开(公告)日：1956-05-29
申请号：US53620555
申请日：1955-09-23
Applicant: LESTER SMITH JOHN , RICHARD PARKER GLENN
Inventor： LESTER SMITH JOHN , RICHARD PARKER GLENN
IPC: B67B7/50
CPC classification number: B67B7/24
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