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公开(公告)号：US1787657A
公开(公告)日：1931-01-06
申请号：US3993325
申请日：1925-06-27
Applicant: ARTOS ENGINEERING CO
Inventor： ANDREN KARL H , OLSEN HAAKON T
IPC: B26D1/00
CPC classification number: B26D3/003 , Y10T83/2135 , Y10T83/4529 , Y10T83/4549
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公开(公告)号：US1787658A
公开(公告)日：1931-01-06
申请号：US24286427
申请日：1927-12-27
Applicant: ARTOS ENGINEERING CO
Inventor： ANDREN KARL H , OLSEN HAAKON T
IPC: H02G1/12
CPC classification number: H02G1/1248
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