US2798151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Master radio receiver with audio distribution system
Assignee: Individual
•
Filing: 1951-01-22
•
Granted: 1957-07-02
•
Expires: 1971-01-22
Abstract
No abstract record available.
Inventors
- 👤 Wendell S Fletcher
- 👤 Ernest W Holland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:54
CPC Classifications
H; H04; H04H; H04H20/00; H04H20/53; H04H20/61; H04H20/63
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US348155A
Cited
US1754878A
Cited
US1623480A
Cited
US1658825A
Cited
US1845302A
Cited
US1968546A
Cited
US2110358A
Cited
US2330109A
Cited
US2279739A
Cited
US2324279A
Cited
US2431973A
Cited
US2366358A
Cited
US2398771A
Cited
US2567276A
Cited
US2523173A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |