Patent US2581079A successfully refreshed from Google Patents.
US2581079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Talking machine combined with a still projector and film strip therefor
Assignee: Dukane Corp
•
Filing: 1948-02-12
•
Granted: 1952-01-01
•
Expires: 1968-02-12
Abstract
No abstract record available.
Inventors
- 👤 Coutelen Julien Henri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:03
CPC Classifications
G; G03; G03B; G03B31/00; G03B31/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1998889A
Cited
US1083498A
Cited
US1065135A
Cited
US1254684A
Cited
US1499941A
Cited
US1921494A
Cited
US1826786A
Cited
US1859665A
Cited
US1909765A
Cited
US1987544A
Cited
US2036666A
Cited
US2116314A
Cited
US2086554A
Cited
US2141037A
Cited
US2136209A
Cited
FR858233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |