US2609490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic tuning control
Assignee: Individual
•
Filing: 1946-01-07
•
Granted: 1952-09-02
•
Expires: 1966-01-07
Abstract
No abstract record available.
Inventors
- 👤 John M Hollywood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:23
CPC Classifications
H; H03; H03J; H03J7/00; H03J7/18; H03J7/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1530169A
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US1626724A
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US1620204A
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US2105096A
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US2280019A
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US2380947A
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US2380948A
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US2404568A
Cited
US2379689A
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US2415799A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-02 | 1956-03-03 | 1956-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-02 | 1960-03-03 | 1960-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-02 | 1964-03-03 | 1964-09-02 | $7700.00 | Window Closed / Lapsed |