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公开(公告)号：US3527588A
公开(公告)日：1970-09-08
申请号：US3527588D
申请日：1967-12-15
Applicant: AIKEN IND INC
Inventor： AIKEN HOWARD H , PARVIN ALLAN I , TAITEL CHARLES M , FESTNER THEODOR , JANOWSKY SEYMOUR , SKURNIK HAROLD
CPC classification number: H01J9/32 , H01J9/18 , H01J2209/185
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