US2811591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feedback network compensations
Assignee: Raytheon Co
•
Filing: 1954-08-30
•
Granted: 1957-10-29
•
Expires: 1974-08-30
Abstract
No abstract record available.
Inventors
- 👤 David P Kennedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:33
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/34; H03F1/36; Y; Y10; Y10S; Y10S84/00; Y10S84/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |