Patent US3424992A successfully refreshed from Google Patents.
US3424992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wideband power amplifier
Assignee: United States Department of the Navy
•
Filing: 1965-06-30
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Granted: 1969-01-28
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Expires: 1985-06-30
Abstract
No abstract record available.
Inventors
- 👤 Frederick C Zielinski
- 👤 Warren A Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:11
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/30; H03F3/3069; H03F3/3071
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2789164A
Cited
US2860195A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |