US2582951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio receiver tuning indicator
Assignee: Farnsworth Research Corp
•
Filing: 1947-04-12
•
Granted: 1952-01-22
•
Expires: 1967-04-12
Abstract
No abstract record available.
Inventors
- 👤 Gerald J Barry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:25
CPC Classifications
H; H03; H03J; H03J1/00; H03J1/02; H03J1/04; H03J1/044
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2305991A
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US2367939A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-21 | 1955-07-23 | 1956-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-21 | 1959-07-23 | 1960-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-21 | 1963-07-23 | 1964-01-22 | $7700.00 | Window Closed / Lapsed |