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公开(公告)号：US1638416A
公开(公告)日：1927-08-09
申请号：US6890925
申请日：1925-11-13
Applicant: SMITH CHARLES E , KARP JACOB N
Inventor： SMITH CHARLES E , KARP JACOB N
IPC: B26D1/29
CPC classification number: B26D1/29 , Y10T83/2216 , Y10T83/8789
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