Patent US4167486A successfully refreshed from Google Patents.
Patent US2935686A successfully refreshed from Google Patents.
US2935686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency stabilizing system
Assignee: Individual
•
Filing: 1957-07-24
•
Granted: 1960-05-03
•
Expires: 1977-07-24
Abstract
No abstract record available.
Inventors
- 👤 Quentin A Kerns
- 👤 Oscar A Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:26
CPC Classifications
H; H03; H03L; H03L7/00; H03L7/06; H03L7/08; H03L7/085; H03L7/087
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2104801A
Cited
US2304134A
Cited
US2474253A
Cited
US2452960A
Cited
US2562912A
Cited
US2592263A
Cited
US2561182A
Cited
US2696582A
Cited
US2774932A
Cited
US2829251A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-03 | 1963-11-02 | 1964-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-03 | 1967-11-02 | 1968-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-03 | 1971-11-02 | 1972-05-03 | $7700.00 | Window Closed / Lapsed |