US2805331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for pre-tuning radio and television sets
Assignee: Individual
•
Filing: 1953-07-03
•
Granted: 1957-09-03
•
Expires: 1973-07-03
Abstract
No abstract record available.
Inventors
- 👤 James E Wolford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:52
CPC Classifications
G; G04; G04C; G04C21/00; G04C21/16; G04C21/28; G04C23/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2636981A
Cited
US2048742A
Cited
US1992327A
Cited
US1975781A
Cited
US2068227A
Cited
US2154994A
Cited
US2248116A
Cited
US2257537A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |