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公开(公告)号：US3480803A
公开(公告)日：1969-11-25
申请号：US3480803D
申请日：1965-10-20
Applicant: GEN MOTORS CORP
Inventor： JAMERSON FRANK E , LEFFERT CHARLES B , REES DAVID B
CPC classification number: H01J45/00
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