US2973431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automobile radio receiver system
Assignee: C G S LABORATORIES Inc
•
Filing: 1954-07-22
•
Granted: 1961-02-28
•
Expires: 1974-07-22
Abstract
No abstract record available.
Inventors
- 👤 Carl G Sontheimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:10
CPC Classifications
H; H03; H03J; H03J9/00; H01; H01F; H01F29/00; H01F29/14; H01F29/143
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2302893A
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US2491968A
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US2581202A
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US2755446A
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US2811639A
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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) | 1964-02-28 | 1964-08-29 | 1965-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-28 | 1968-08-29 | 1969-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-28 | 1972-08-29 | 1973-02-28 | $7700.00 | Window Closed / Lapsed |