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公开(公告)号:US2036046A
公开(公告)日:1936-03-31
申请号:US74916734
申请日:1934-10-20
Applicant: IBM
Inventor: HARRISON LAURENCE S
IPC: G04B19/22
CPC classification number: G04B19/226
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公开(公告)号:US2110861A
公开(公告)日:1938-03-15
申请号:US1815535
申请日:1935-04-25
Applicant: IBM
Inventor: HARRISON LAURENCE S
IPC: G04C13/03
CPC classification number: G04C13/03
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公开(公告)号:US2199541A
公开(公告)日:1940-05-07
申请号:US13376237
申请日:1937-03-30
Applicant: IBM
Inventor: HARRISON LAURENCE S , RABENDA EDWARD J
IPC: B41J5/38
CPC classification number: B41J5/38
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公开(公告)号:US2129762A
公开(公告)日:1938-09-13
申请号:US70913834
申请日:1934-01-31
Applicant: IBM
Inventor: HARRISON LAURENCE S
IPC: G07C3/04
CPC classification number: G07C3/045
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公开(公告)号:US2053077A
公开(公告)日:1936-09-01
申请号:US72125834
申请日:1934-04-19
Applicant: IBM
Inventor: HARRISON LAURENCE S
IPC: G04C13/04
CPC classification number: G04C13/0463
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公开(公告)号:US2294751A
公开(公告)日:1942-09-01
申请号:US27797439
申请日:1939-06-08
Applicant: IBM
Inventor: HARRISON LAURENCE S , OTTO WEITMANN
IPC: G06K19/067
CPC classification number: G06K19/067
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公开(公告)号:US2113617A
公开(公告)日:1938-04-12
申请号:US1724635
申请日:1935-04-19
Applicant: IBM
Inventor: HARRISON LAURENCE S
IPC: H01H51/32
CPC classification number: H01H51/32
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公开(公告)号:US2101432A
公开(公告)日:1937-12-07
申请号:US1724535
申请日:1935-04-19
Applicant: IBM
Inventor: HARRISON LAURENCE S
IPC: G04C11/00
CPC classification number: G04C11/005
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公开(公告)号:US1926901A
公开(公告)日:1933-09-12
申请号:US40723229
申请日:1929-11-14
Applicant: IBM
Inventor: HARRISON LAURENCE S
IPC: G04C13/04
CPC classification number: G04C13/0454
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