US2446565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio receiver noise reducing circuit
Assignee: Individual
•
Filing: 1942-09-29
•
Granted: 1948-08-10
•
Expires: 1962-09-29
Abstract
No abstract record available.
Inventors
- 👤 Wasmansdorff Carlton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:27
CPC Classifications
H; H03; H03G; H03G11/00; H03G11/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2144995A
Cited
US2151775A
Cited
US2207587A
Cited
US2279819A
Cited
US2221700A
Cited
US2247324A
Cited
US2247085A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-10 | 1952-02-09 | 1952-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-10 | 1956-02-09 | 1956-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-10 | 1960-02-09 | 1960-08-10 | $7700.00 | Window Closed / Lapsed |