US2999169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-saturating transistor pulse amplifier
Assignee: AT&T Inc
•
Filing: 1956-12-28
•
Granted: 1961-09-05
•
Expires: 1976-12-28
Abstract
No abstract record available.
Inventors
- 👤 Feiner Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:39
CPC Classifications
H; H03; H03G; H03G11/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2208665A
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US2369066A
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US2475258A
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US2544340A
Cited
US2497691A
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US2585077A
Cited
US2801296A
Cited
US2791739A
Cited
US2902548A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-04 | 1965-03-06 | 1965-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-04 | 1969-03-06 | 1969-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-04 | 1973-03-06 | 1973-09-05 | $7700.00 | Window Closed / Lapsed |