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公开(公告)号：US1883398A
公开(公告)日：1932-10-18
申请号：US24612328
申请日：1928-01-12
Applicant: THERMAL SYNDICATE LTD
Inventor： FREDERICK REYNOLDS , LEONARD LEES ARTHUR
CPC classification number: H01J13/00 , H01J13/56 , H01J2893/0095
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