US3081405A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gated amplifier with positive feedback
Assignee: Individual
•
Filing: 1959-08-31
•
Granted: 1963-03-12
•
Expires: 1979-08-31
Abstract
No abstract record available.
Inventors
- 👤 John M Hovey
- 👤 Frederick C Hallberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:45
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/01; H03K5/04; H03K5/05
Claims Analysis
Total Claims: 0
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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) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |