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公开(公告)号：US2903645A
公开(公告)日：1959-09-08
申请号：US45878254
申请日：1954-09-28
Applicant: GEN ELECTRIC
Inventor： WRIGHT JAMES H , BRIGGS WALTON E , BILLINGS SANFORD M , HARRIMAN HERBERT A
IPC: G01B7/06
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