Patent US2817014A successfully refreshed from Google Patents.
US2817014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Syllabic frequency discriminator
Assignee: Government of Netherlands
•
Filing: 1951-05-26
•
Granted: 1957-12-17
•
Expires: 1971-05-26
Abstract
No abstract record available.
Inventors
- 👤 Bevoort Cornelis
- 👤 Baudet Raimond Edouard Marie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:06
CPC Classifications
H; H04; H04B; H04B3/00; H04B3/02; H04B3/04; H04B3/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1447773A
Cited
US1762953A
Cited
US1811954A
Cited
US1811955A
Cited
US1971679A
Cited
US2284617A
Cited
US2704326A
Cited
US2621808A
Cited
US2678386A
Cited
US2590973A
Cited
US2694162A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-16 | 1961-06-17 | 1961-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-16 | 1965-06-17 | 1965-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-16 | 1969-06-17 | 1969-12-17 | $7700.00 | Window Closed / Lapsed |