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公开(公告)号：US2728470A
公开(公告)日：1955-12-27
申请号：US22968751
申请日：1951-06-04
Applicant: BRISTOL IND EQUIPMENT COMPANY
Inventor： PETERSON EDWARD G
IPC: B65G65/46
CPC classification number: B65G65/46
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公开(公告)号：US2884898A
公开(公告)日：1959-05-05
申请号：US65300557
申请日：1957-04-15
Applicant: BRISTOL IND EQUIPMENT COMPANY
Inventor： PETERSON EDWARD G
IPC: B21D37/18
CPC classification number: B21D37/18 , Y10S118/04
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公开(公告)号：US2809129A
公开(公告)日：1957-10-08
申请号：US46094554
申请日：1954-10-07
Applicant: BRISTOL IND EQUIPMENT COMPANY
Inventor： PETERSON EDWARD G
CPC classification number: B21D37/18 , C23G3/00 , Y10S118/04
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