Patent US2393709A successfully refreshed from Google Patents.
US2393709A
Expired / Lapsed
US
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Distortion reduction on modulated amplifiers
Assignee: Federal Telephone and Radio Corp
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Filing: 1942-11-16
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Granted: 1946-01-29
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Expires: 1962-11-16
Abstract
No abstract record available.
Inventors
- 👤 Romander Hugo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:07
CPC Classifications
H; H03; H03C; H03C1/00; H03C1/16; H03C1/18; H03C1/22; H03C1/20; H03C7/00; H03C7/02; H03F; H03F1/00; H03F1/02; H03F1/04; H03F1/06; H03F1/08; H03H; H03H7/00; H03H7/38; H03H7/383
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-01-28 | 1949-07-30 | 1950-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-01-28 | 1953-07-30 | 1954-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-01-28 | 1957-07-30 | 1958-01-29 | $7700.00 | Window Closed / Lapsed |