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公开(公告)号：US1955645A
公开(公告)日：1934-04-17
申请号：US5928725
申请日：1925-09-29
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：US1908264A
公开(公告)日：1933-05-09
申请号：US1243825
申请日：1925-02-28
Applicant: DICTAPHONE CORP
Inventor： LUCARELLE JOSEPH M , RENHOLDT JOHN E
IPC: G11B25/02
CPC classification number: G11B25/02
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