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81.Loudspeaker diaphragm support comprising plural compliant members 失效
Title translation: 扬声器隔膜支撑件包括多个顺从构件公开(公告)号:US2490466A
公开(公告)日:1949-12-06
申请号:US54567244
申请日:1944-07-19
Applicant: RCA CORP
Inventor: OLSON HARRY F , JOHN PRESTON
IPC: H04R7/20
CPC classification number: H04R7/20 , H04R2307/207
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公开(公告)号:US2468270A
公开(公告)日:1949-04-26
申请号:US57069944
申请日:1944-12-30
Applicant: RCA CORP
Inventor: OLSON HARRY F , JOHN PRESTON
CPC classification number: B06B1/08
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公开(公告)号:US2348356A
公开(公告)日:1944-05-09
申请号:US37686141
申请日:1941-01-31
Applicant: RCA CORP
Inventor: OLSON HARRY F
IPC: H04R9/08
CPC classification number: H04R9/08
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公开(公告)号:US2271988A
公开(公告)日:1942-02-03
申请号:US27080139
申请日:1939-04-29
Applicant: RCA CORP
Inventor: OLSON HARRY F
IPC: H04R1/40
CPC classification number: H04R1/406
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公开(公告)号:US2113219A
公开(公告)日:1938-04-05
申请号:US72820234
申请日:1934-05-31
Applicant: RCA CORP
Inventor: OLSON HARRY F , FRANK MASSA
IPC: H04R9/08
CPC classification number: H04R9/08
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公开(公告)号:US2097289A
公开(公告)日:1937-10-26
申请号:US75837434
申请日:1934-12-20
Applicant: RCA CORP
Inventor: OLSON HARRY F
IPC: H04R1/28
CPC classification number: H04R1/2826
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公开(公告)号:US2064316A
公开(公告)日:1936-12-15
申请号:US64713232
申请日:1932-12-14
Applicant: RCA CORP
Inventor: OLSON HARRY F , FRANK MASSA
IPC: H04R9/08
CPC classification number: H04R9/08
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公开(公告)号:US1814357A
公开(公告)日:1931-07-14
申请号:US37417429
申请日:1929-06-27
Applicant: RCA CORP
Inventor: IRVING WOLFF , OLSON HARRY F
IPC: G10K11/28
CPC classification number: G10K11/28
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