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公开(公告)号：US2500508A
公开(公告)日：1950-03-14
申请号：US67913046
申请日：1946-06-25
Applicant: PETER BACHIN
Inventor： PETER BACHIN
CPC classification number: A61H23/0263 , A61H2201/0142 , A61H2201/0207 , A61H2201/0228 , A61H2201/025 , A61H2201/0271
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