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公开(公告)号:US2019897A
公开(公告)日:1935-11-05
申请号:US69809333
申请日:1933-11-15
Applicant: IBM
Inventor: MICHAEL FIEHL
IPC: G07C1/06
CPC classification number: G07C1/06 , Y10S101/30
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公开(公告)号:US3015487A
公开(公告)日:1962-01-02
申请号:US82267559
申请日:1959-06-24
Applicant: IBM
Inventor: MICHAEL FIEHL
IPC: G06K13/12
CPC classification number: G06K13/12
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公开(公告)号:US2919130A
公开(公告)日:1959-12-29
申请号:US77896058
申请日:1958-12-08
Applicant: IBM
Inventor: MICHAEL FIEHL
IPC: G06K13/10
CPC classification number: G06K13/10
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公开(公告)号:US2447806A
公开(公告)日:1948-08-24
申请号:US70275646
申请日:1946-10-11
Applicant: IBM
Inventor: LAKE CLAIR D , MICHAEL FIEHL
IPC: H01H19/62
CPC classification number: H01H19/62 , Y10T74/2107
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公开(公告)号:US2394601A
公开(公告)日:1946-02-12
申请号:US53423544
申请日:1944-05-05
Applicant: IBM
Inventor: MICHAEL FIEHL
IPC: H01H50/30
CPC classification number: H01H50/30
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公开(公告)号:US3293415A
公开(公告)日:1966-12-20
申请号:US24191262
申请日:1962-12-03
Applicant: IBM
Inventor: MICHAEL FIEHL
CPC classification number: B61L25/041
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公开(公告)号:US3066933A
公开(公告)日:1962-12-04
申请号:US9888461
申请日:1961-03-28
Applicant: IBM
Inventor: MICHAEL FIEHL
IPC: B65H29/26
CPC classification number: B65H29/26
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