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公开(公告)号：US3118126A
公开(公告)日：1964-01-14
申请号：US81313659
申请日：1959-05-14
Applicant: TEXAS INSTRUMENTS INC
Inventor： BROCK FRED A , BURG KENNETH E , SMITH MARKWICK K
IPC: G01V1/18
CPC classification number: G01V1/186
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