Patent US1946746A successfully refreshed from Google Patents.
US1946746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Superheterodyne radioreceiver
Assignee: RCA Corp
•
Filing: 1931-01-13
•
Granted: 1934-02-13
•
Expires: 1951-01-13
Abstract
No abstract record available.
Inventors
- 👤 Kemp Colin Gordon
- 👤 Kemp Leslie George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:38
CPC Classifications
H; H03; H03D; H03D7/00; H03D7/14; H03D7/1416
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1937-02-12 | 1937-08-14 | 1938-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-02-12 | 1941-08-14 | 1942-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-02-12 | 1945-08-14 | 1946-02-13 | $7700.00 | Window Closed / Lapsed |