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公开(公告)号：US3128990A
公开(公告)日：1964-04-14
申请号：US10861261
申请日：1961-05-08
Applicant: DIAMOND POWER SPECIALITY
Inventor： BROOKS ERNEST A , DEMART LEROY S
IPC: B25B29/02
CPC classification number: B25B29/02
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