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公开(公告)号：US2674996A
公开(公告)日：1954-04-13
申请号：US35006453
申请日：1953-04-21
Applicant: AVERILL STOWELL , RIDDLE RAY E
Inventor： AVERILL STOWELL , RIDDLE RAY E
IPC: A61H1/02
CPC classification number: A61H1/0218 , A61H2201/1607
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