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公开(公告)号：US3176810A
公开(公告)日：1965-04-06
申请号：US15171161
申请日：1961-11-13
Applicant: SALSBURY CORP
Inventor： BUTTERBAUGH GALEN P , GALLEHER LOUIS C
IPC: F16D45/00
CPC classification number: F16D45/00
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