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公开(公告)号：US3027513A
公开(公告)日：1962-03-27
申请号：US74693658
申请日：1958-07-07
Applicant: DETROIT EDISON CO
Inventor： MULAVEY JAMES E , HARTZ FRANK M
IPC: G01R29/18
CPC classification number: G01R29/18
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公开(公告)号：US3540030A
公开(公告)日：1970-11-10
申请号：US3540030D
申请日：1969-09-29
Applicant: DETROIT EDISON CO
Inventor： HARTZ FRANK M
IPC: H02J13/00
CPC classification number: H02J13/0048 , Y02B90/263 , Y04S40/123 , Y10T307/944
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