US2511409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Superregenerative circuit
Assignee: HALLICRAFTERS CO
•
Filing: 1947-10-22
•
Granted: 1950-06-13
•
Expires: 1967-10-22
Abstract
No abstract record available.
Inventors
- 👤 Leonard A Mayberry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:43
CPC Classifications
H; H03; H03D; H03D11/00; H03D11/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1838084A
Cited
US1726806A
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US1944988A
Cited
US2228163A
Cited
US2234184A
Cited
US2343987A
Cited
US2419570A
Cited
US2419569A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-12 | 1953-12-12 | 1954-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-12 | 1957-12-12 | 1958-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-12 | 1961-12-12 | 1962-06-13 | $7700.00 | Window Closed / Lapsed |