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公开(公告)号：US2747139A
公开(公告)日：1956-05-22
申请号：US31315652
申请日：1952-10-04
Applicant: GEN MOTORS CORP
Inventor： FOLAND FRANCIS K , ONKSEN GEORGE W , TODD HAROLD E
IPC: B60Q1/14
CPC classification number: B60Q1/1423 , B60Q2300/42
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