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公开(公告)号：US2916694A
公开(公告)日：1959-12-08
申请号：US56906356
申请日：1956-03-02
Applicant: GEN MOTORS CORP
Inventor： HANYSZ EUGENE A , SAUR ROGER L
IPC: G01B7/06
CPC classification number: G01B7/105
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