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公开(公告)号：US1402585A
公开(公告)日：1922-01-03
申请号：US45033421
申请日：1921-03-07
Applicant: HIRSCH EPSTEIN , MITNICK JACOB J , BERNSTEIN JOSEPH M
Inventor： HIRSCH EPSTEIN , MITNICK JACOB J , BERNSTEIN JOSEPH M
IPC: F02M1/00
CPC classification number: F02M1/00 , F02M2700/435
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