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公开(公告)号:US1110587A
公开(公告)日:1914-09-15
申请号:US1905259953
申请日:1905-05-11
Applicant: COOPER HEWITT ELECTRIC CO
Inventor: THOMAS PERCY H
CPC classification number: H01J1/00
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公开(公告)号:US958445A
公开(公告)日:1910-05-17
申请号:US1904207014
申请日:1904-05-09
Applicant: COOPER HEWITT ELECTRIC CO
Inventor: THOMAS PERCY H
CPC classification number: H01J1/00
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公开(公告)号:US916879A
公开(公告)日:1909-03-30
申请号:US1903165053
申请日:1903-07-11
Applicant: GEN ELECTRIC
Inventor: KRUH OSIAS O
CPC classification number: H01J1/00
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