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公开(公告)号：US2092027A
公开(公告)日：1937-09-07
申请号：US2863135
申请日：1935-06-27
Applicant: GEN MOTORS CORP
Inventor： KARL SCHWARTZWALDER , RULKA ALEX S
IPC: B28B3/02
CPC classification number: B28B3/02 , Y10S425/035
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