US2867389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound reproducing device
Assignee: Individual
•
Filing: 1954-07-12
•
Granted: 1959-01-06
•
Expires: 1974-07-12
Abstract
No abstract record available.
Inventors
- 👤 Viets Charles William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:24
CPC Classifications
G; G11; G11B; G11B31/00; G11B31/003; G11B23/00; G11B23/02; G11B23/04; G11B23/08; G11B23/087
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2032190A
Cited
US2005404A
Cited
US2513616A
Cited
US2572596A
Cited
US2543483A
Cited
US2655563A
Cited
US2603721A
Cited
US2572157A
Cited
GB698402A
Cited
US2560234A
Cited
US2681950A
Cited
US2712448A
Cited
US2702834A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-05 | 1962-07-07 | 1963-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-05 | 1966-07-07 | 1967-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-05 | 1970-07-07 | 1971-01-06 | $7700.00 | Window Closed / Lapsed |