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公开(公告)号：US1795176A
公开(公告)日：1931-03-03
申请号：US32317228
申请日：1928-12-01
Applicant: GEN ELECTRIC
Inventor： LLOYD JR WILL L
IPC: G01R15/06
CPC classification number: G01R15/06
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公开(公告)号：US2145727A
公开(公告)日：1939-01-31
申请号：US18208437
申请日：1937-12-28
Applicant: GEN ELECTRIC
Inventor： LLOYD JR WILL L
CPC classification number: H05G1/06 , H01J5/06 , H01J35/025 , H01J35/22
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公开(公告)号：US1795175A
公开(公告)日：1931-03-03
申请号：US9401926
申请日：1926-03-11
Applicant: GEN ELECTRIC
Inventor： LLOYD JR WILL L
IPC: G01R13/04
CPC classification number: G01R13/04
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