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公开(公告)号：US3420603A
公开(公告)日：1969-01-07
申请号：US3420603D
申请日：1964-03-20
Applicant: CHARLES JOSEPH WHILEMS
Inventor： WHILEMS CHARLES JOSEPH
CPC classification number: H01S3/034 , G02B7/007 , H01J5/24 , H01J29/24 , H01J2893/0039
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