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公开(公告)号：US3509500A
公开(公告)日：1970-04-28
申请号：US3509500D
申请日：1966-12-05
Applicant: AVCO CORP
Inventor： MCNAIR ROBERT J , BRUCK GEORGE , HOFFMAN SHELDON
CPC classification number: H03H7/01 , H03H7/40 , H03J5/0209 , H03J5/246 , H03J7/18
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