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公开(公告)号：US3445750A
公开(公告)日：1969-05-20
申请号：US3445750D
申请日：1966-10-17
Applicant: UTHE TECHNOLOGY
Inventor： UTHE PAUL M JR , WRIGHT LOREN G , GREENAN RICHARD E
CPC classification number: H03F1/34 , B06B1/0253 , Y10T307/461
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公开(公告)号：US3551700A
公开(公告)日：1970-12-29
申请号：US3551700D
申请日：1967-10-30
Applicant: UTHE TECHNOLOGY
Inventor： GREENAN RICHARD E
IPC: H02M5/257 , H03K17/723 , H03K17/00
CPC classification number: H03K17/723 , H02M5/2573
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