US2866856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlled oscillator systems
Assignee: Individual
•
Filing: 1954-02-15
•
Granted: 1958-12-30
•
Expires: 1974-02-15
Abstract
No abstract record available.
Inventors
- 👤 Weathers Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:25
CPC Classifications
H; H04; H04R; H04R19/00; H04R19/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1544001A
Cited
US2436946A
Cited
US2481886A
Cited
US2436129A
Cited
US2556040A
Cited
US2563098A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |