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公开(公告)号：US2306641A
公开(公告)日：1942-12-29
申请号：US37972141
申请日：1941-02-19
Applicant: WESTON ELECTRICAL INSTR CORP
Inventor： ROCKWELL JR HARVEY P
IPC: G01J1/42
CPC classification number: G01J1/42
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2.发明授权
公开(公告)号：US2235590A
公开(公告)日：1941-03-18
申请号：US26976239
申请日：1939-04-24
Applicant: WESTON ELECTRICAL INSTR CORP
Inventor： ROCKWELL JR HARVEY P
IPC: G01J1/12
CPC classification number: G01J1/124
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