US2961613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear frequency discriminator
Assignee: Raytheon Co
•
Filing: 1956-01-19
•
Granted: 1960-11-22
•
Expires: 1976-01-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Albert Eschner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:01
CPC Classifications
H; H03; H03D; H03D3/00; H03D3/02; H03D3/06; H03D3/08; H03D3/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2899643A
Cited
US2114335A
Cited
US2413913A
Cited
US2589133A
Cited
US2755383A
Cited
US2737628A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |