US3481214A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asynchronous drive system
Assignee: RCA Corp
•
Filing: 1968-07-03
•
Granted: 1969-12-02
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Expires: 1988-07-03
Abstract
No abstract record available.
Inventors
- 👤 Henry Ray Warren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:30
CPC Classifications
H; H04; H04R; H04R25/00; H04R25/48; F; F16; F16D; F16D7/00; F16D7/02; F16H; F16H7/00; F16H7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US886998A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |