Patent US2942889A successfully refreshed from Google Patents.
US2942889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phonograph device
Assignee: GOLDA A DUNCAN
•
Filing: 1954-10-29
•
Granted: 1960-06-28
•
Expires: 1974-10-29
Abstract
No abstract record available.
Inventors
- 👤 Theodore R Duncan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:05
CPC Classifications
G; G11; G11B; G11B33/00; G11B33/02; G11B33/06; G11B3/00; G11B3/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1323317A
Cited
US653654A
Cited
US639452A
Cited
US708049A
Cited
US724435A
Cited
US1080013A
Cited
GB191424784A
Cited
US1506562A
Cited
US2236275A
Cited
US2236599A
Cited
US2197881A
Cited
US2381927A
Cited
US2499343A
Cited
US2647753A
Cited
US2580071A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |