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公开(公告)号:US2284836A
公开(公告)日:1942-06-02
申请号:US7566036
申请日:1936-04-22
Applicant: DICTAPHONE CORP
Inventor: NORTON LELAND D , RENHOLDT JOHN E
IPC: G11B25/02
CPC classification number: G11B25/02
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公开(公告)号:US2142407A
公开(公告)日:1939-01-03
申请号:US15229937
申请日:1937-07-07
Applicant: DICTAPHONE CORP
Inventor: NORTON LELAND D , RENHOLDT JOHN E
IPC: G10K11/22
CPC classification number: G10K11/22
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公开(公告)号:US2070180A
公开(公告)日:1937-02-09
申请号:US72113234
申请日:1934-04-18
Applicant: DICTAPHONE CORP
Inventor: RENHOLDT JOHN E
CPC classification number: G11B25/02
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公开(公告)号:US1983039A
公开(公告)日:1934-12-04
申请号:US10440726
申请日:1926-04-24
Applicant: DICTAPHONE CORP
Inventor: LUCARELLE JOSEPH M , RENHOLDT JOHN E
IPC: G11B25/02
CPC classification number: G11B25/02
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公开(公告)号:US1759654A
公开(公告)日:1930-05-20
申请号:US73179524
申请日:1924-08-13
Applicant: DICTAPHONE CORP
Inventor: LUCARELLE JOSEPH M , RENHOLDT JOHN E
IPC: G11B25/02
CPC classification number: G11B25/02
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公开(公告)号:US2326678A
公开(公告)日:1943-08-10
申请号:US40952541
申请日:1941-09-04
Applicant: DICTAPHONE CORP
Inventor: RENHOLDT JOHN E
IPC: F16D11/12
CPC classification number: F16D11/12
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公开(公告)号:US2056620A
公开(公告)日:1936-10-06
申请号:US999435
申请日:1935-03-08
Applicant: DICTAPHONE CORP
Inventor: RENHOLDT JOHN E
IPC: G11B25/02
CPC classification number: G11B25/02
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公开(公告)号:US2051792A
公开(公告)日:1936-08-18
申请号:US905835
申请日:1935-03-02
Applicant: DICTAPHONE CORP
Inventor: BEARD THEODORE H , NORTON LELAND D , RENHOLDT JOHN E
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公开(公告)号:US2022216A
公开(公告)日:1935-11-26
申请号:US71192434
申请日:1934-02-19
Applicant: DICTAPHONE CORP
Inventor: RENHOLDT JOHN E
IPC: G11B33/04
CPC classification number: G11B33/04
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公开(公告)号:US2002798A
公开(公告)日:1935-05-28
申请号:US57313331
申请日:1931-11-05
Applicant: DICTAPHONE CORP
Inventor: RENHOLDT JOHN E
CPC classification number: F02M59/102 , Y10S417/903
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