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公开(公告)号：US3179949A
公开(公告)日：1965-04-20
申请号：US21953962
申请日：1962-08-27
Applicant: MIDWESTERN INSTR INC
Inventor： HARRISON WAYNE E , MORROW GEORGE R
IPC: G01D15/14
CPC classification number: G01D15/14
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