US2969468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency and phase discriminator
Assignee: Collins Radio Co
•
Filing: 1957-02-21
•
Granted: 1961-01-24
•
Expires: 1977-02-21
Abstract
No abstract record available.
Inventors
- 👤 Noel E Hogue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:23
CPC Classifications
H; H03; H03D; H03D3/00; H03D3/02; H03D3/06; H03D3/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2495023A
Cited
US2654032A
Cited
US2680160A
Cited
US2695381A
Cited
US2698392A
Cited
US2808508A
Cited
US2781492A
Cited
US2906873A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-24 | 1964-07-25 | 1965-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-24 | 1968-07-25 | 1969-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-24 | 1972-07-25 | 1973-01-24 | $7700.00 | Window Closed / Lapsed |