US2675433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Degenerative amplifier
Assignee: RCA Corp
•
Filing: 1950-04-27
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Granted: 1954-04-13
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Expires: 1970-04-27
Abstract
No abstract record available.
Inventors
- 👤 Jacques I Pantchechnikoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:20
CPC Classifications
H; H10; H10D; H10D84/00; H10D84/60; H10D84/611; H10D84/613; H10D84/617; H02; H02M; H02M7/00; H02M7/02; H02M7/04; H02M7/12; H02M7/21; H02M7/217; H03; H03F; H03F3/00; H03F3/04; H03F3/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2402661A
Cited
US2390502A
Cited
US2560709A
Cited
US2476323A
Cited
US2541322A
Cited
US2585078A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-12 | 1957-10-12 | 1958-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-12 | 1961-10-12 | 1962-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-12 | 1965-10-12 | 1966-04-13 | $7700.00 | Window Closed / Lapsed |