US2814353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transducer with fluid filled diaphragm suspension
Assignee: RCA Corp
•
Filing: 1953-02-26
•
Granted: 1957-11-26
•
Expires: 1973-02-26
Abstract
No abstract record available.
Inventors
- 👤 Harry F Olson
- 👤 Preston John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:57
CPC Classifications
H; H04; H04R; H04R7/00; H04R7/16; H04R7/18; H04R7/20
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US749360A
Cited
DE337299C
Cited
US1454913A
Cited
US1416582A
Cited
US1372054A
Cited
US1634662A
Cited
US1744032A
Cited
FR622598A
Cited
US1687359A
Cited
US2646853A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-25 | 1961-05-27 | 1961-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-25 | 1965-05-27 | 1965-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-25 | 1969-05-27 | 1969-11-26 | $7700.00 | Window Closed / Lapsed |