US2774943A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency modulated oscillator
Assignee: SIERRA ELECTRONIC Corp
•
Filing: 1952-06-30
•
Granted: 1956-12-18
•
Expires: 1972-06-30
Abstract
No abstract record available.
Inventors
- 👤 Robert H Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:28
CPC Classifications
H; H03; H03C; H03C3/00; H03C3/02; H03C3/09
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2130272A
Cited
US2279030A
Cited
US2294372A
Cited
US2382615A
Cited
US2378581A
Cited
US2515030A
Cited
US2531103A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |