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公开(公告)号:US2557186A
公开(公告)日:1951-06-19
申请号:US7739449
申请日:1949-02-19
Applicant: PHILIPS LAB INC
Inventor: HAMACHER EDWARD A
IPC: H03K23/82
CPC classification number: H03K23/82
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公开(公告)号:US2619600A
公开(公告)日:1952-11-25
申请号:US17362650
申请日:1950-07-13
Applicant: PHILIPS LAB INC
Inventor: HAMACHER EDWARD A
IPC: G01N23/207
CPC classification number: G01N23/2076
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公开(公告)号:US2549987A
公开(公告)日:1951-04-24
申请号:US1739848
申请日:1948-03-27
Applicant: PHILIPS LAB INC
Inventor: WILLIAM PARRISH , HAMACHER EDWARD A
IPC: G01N23/20 , G01N23/201 , G01N23/207 , G21K1/02 , H01J5/18 , H01J47/08
CPC classification number: G21K1/02 , G01N23/20 , G01N23/201 , G01N23/207 , H01J5/18 , H01J47/08
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公开(公告)号:US2658131A
公开(公告)日:1953-11-03
申请号:US32201852
申请日:1952-11-22
Applicant: PHILIPS LAB INC
Inventor: HAMACHER EDWARD A , KURT LOWITZSCH
IPC: H01C10/24
CPC classification number: H01C10/24
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公开(公告)号:US2609144A
公开(公告)日:1952-09-02
申请号:US11836749
申请日:1949-09-28
Applicant: PHILIPS LAB INC
Inventor: HAMACHER EDWARD A
IPC: G01R23/09
CPC classification number: G01R23/09
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