US2992395A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feedback amplifier circuit
Assignee: General Electric Co
•
Filing: 1958-12-30
•
Granted: 1961-07-11
•
Expires: 1978-12-30
Abstract
No abstract record available.
Inventors
- 👤 Theodore A Rich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:46
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/34; H03F1/36; H01; H01C; H01C10/00; H01C7/00; H01C7/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1465998A
Cited
US1739043A
Cited
US2248889A
Cited
US2173180A
Cited
GB596531A
Cited
US2790945A
Cited
US2834899A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |