US2798944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal seeking self adjusting radio receiving system
Assignee: AT&T Inc
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Filing: 1953-10-09
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Granted: 1957-07-09
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Expires: 1973-10-09
Abstract
No abstract record available.
Inventors
- 👤 Nean K Lund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:30
CPC Classifications
H; H03; H03J; H03J7/00; H03J7/18; H03J7/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2368778A
Cited
US2506869A
Cited
US2550430A
Cited
US2584578A
Cited
US2525442A
Cited
US2521752A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-08 | 1961-01-07 | 1961-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-08 | 1965-01-07 | 1965-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-08 | 1969-01-07 | 1969-07-09 | $7700.00 | Window Closed / Lapsed |