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公开(公告)号:US1177926A
公开(公告)日:1916-04-04
申请号:US2798315
申请日:1915-05-14
Applicant: CONS SAFETY PIN COMPANY
Inventor: CAIRNS EDWARD
CPC classification number: B21G3/04
公开(公告)号:US1177926A
公开(公告)日:1916-04-04
申请号:US2798315
申请日:1915-05-14
Applicant: CONS SAFETY PIN COMPANY
Inventor: CAIRNS EDWARD
CPC classification number: B21G3/04