US2964713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Audio automatic volume control
Assignee: Individual
•
Filing: 1958-03-07
•
Granted: 1960-12-13
•
Expires: 1978-03-07
Abstract
No abstract record available.
Inventors
- 👤 Jr Francis H Shepard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:32
CPC Classifications
H; H03; H03G; H03G7/00; H03G7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2559587A
Cited
US2284102A
Cited
US2307308A
Cited
US2468082A
Cited
US2441334A
Cited
US2558519A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |