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公开(公告)号：US2139290A
公开(公告)日：1938-12-06
申请号：US69071533
申请日：1933-09-23
Applicant: FELLOWS GEAR SHAPER CO
Inventor： SLOMER WILLIAM F
CPC classification number: B23F23/1293 , B23F19/04 , Y10T409/10636
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