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公开(公告)号：US2858207A
公开(公告)日：1958-10-28
申请号：US55490755
申请日：1955-12-22
Applicant: CHARLES BERTOLUS ETS
Inventor： WARIN MAURICE P
IPC: C22C19/00 , H01J1/22 , H01J1/26 , H01J61/067
CPC classification number: C22C19/00 , H01J1/22 , H01J1/26 , H01J61/0675
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