US2950443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unique unity gain amplifier
Assignee: Ambac International Corp
•
Filing: 1958-06-26
•
Granted: 1960-08-23
•
Expires: 1978-06-26
Abstract
No abstract record available.
Inventors
- 👤 Gareth M Davidson
- 👤 Robert F Brady
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:32
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/42; H03F3/44; H03F3/50; H03F3/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2679556A
Cited
US2562476A
Cited
US2584850A
Cited
US2592193A
Cited
US2691101A
Cited
US2795654A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-23 | 1964-02-22 | 1964-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-23 | 1968-02-22 | 1968-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-23 | 1972-02-22 | 1972-08-23 | $7700.00 | Window Closed / Lapsed |