US2972660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency adjustment system
Assignee: MOORE AND HALL
•
Filing: 1952-09-03
•
Granted: 1961-02-21
•
Expires: 1972-09-03
Abstract
No abstract record available.
Inventors
- 👤 Toulon Pierre Marie Gabriel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:06
CPC Classifications
H; H03; H03J; H03J7/00; H03J7/18; H03J7/30; H04; H04N; H04N5/00; H04N5/76; H04N5/84; H04N5/85
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-21 | 1964-08-22 | 1965-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-21 | 1968-08-22 | 1969-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-21 | 1972-08-22 | 1973-02-21 | $7700.00 | Window Closed / Lapsed |