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公开(公告)号：US848548A
公开(公告)日：1907-03-26
申请号：US1905275505
申请日：1905-08-23
Applicant: AULTMAN & TAYLOR MACH COMPANY
Inventor： HARROLD AMOS
IPC: B23D47/00
CPC classification number: B23D47/005 , Y10T83/8887
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