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公开(公告)号:US2429104A
公开(公告)日:1947-10-14
申请号:US43078843
申请日:1943-03-27
Applicant: RCA CORP
Inventor: OLSON HARRY F
IPC: G01S1/72
CPC classification number: G01S1/72
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公开(公告)号:US2247663A
公开(公告)日:1941-07-01
申请号:US33654240
申请日:1940-05-22
Applicant: RCA CORP
Inventor: OLSON HARRY F
IPC: H04R1/34
CPC classification number: H04R1/342
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公开(公告)号:US1897732A
公开(公告)日:1933-02-14
申请号:US54109631
申请日:1931-05-29
Applicant: RCA CORP
Inventor: OLSON HARRY F , BARTON KREUZER
IPC: H04R1/40
CPC classification number: H04R1/406
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46.Apparatus for converting sound vibrations into electrical variations 失效
Title translation: 将声音振动转换为电气变化的装置-
47.
公开(公告)号:US3118977A
公开(公告)日:1964-01-21
申请号:US4030360
申请日:1960-07-01
Applicant: RCA CORP
Inventor: OLSON HARRY F
IPC: G11B3/72
CPC classification number: G11B3/72
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公开(公告)号:US3007362A
公开(公告)日:1961-11-07
申请号:US46039654
申请日:1954-10-05
Applicant: RCA CORP
Inventor: OLSON HARRY F , HERBERT BELAR
IPC: G06F7/58
CPC classification number: G06F7/588
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公开(公告)号:US2964272A
公开(公告)日:1960-12-13
申请号:US51959955
申请日:1955-07-01
Applicant: RCA CORP
Inventor: OLSON HARRY F
CPC classification number: F16F9/463 , F16F15/005 , F16F15/03
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公开(公告)号:US2918667A
公开(公告)日:1959-12-22
申请号:US64973257
申请日:1957-04-01
Applicant: RCA CORP
Inventor: OLSON HARRY F , HERBERT BELAR
IPC: G10L25/90
CPC classification number: G10L25/90
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