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公开(公告)号：US1602245A
公开(公告)日：1926-10-05
申请号：US5775725
申请日：1925-09-21
Applicant: JAMES NISBET
Inventor： JAMES NISBET
CPC classification number: F21V33/00 , H01J13/00 , H01J2893/0095
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