Patent US2867685A successfully refreshed from Google Patents.
US2867685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Television recording and reproducing system
Assignee: 3M Co
•
Filing: 1952-02-18
•
Granted: 1959-01-06
•
Expires: 1972-02-18
Abstract
No abstract record available.
Inventors
- 👤 Johnson Wayne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:56
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/917; H04N5/919
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1771360A
Cited
US1867542A
Cited
US1974911A
Cited
FR832168A
Cited
US2427421A
Cited
US2313915A
Cited
US2347084A
Cited
US2548795A
Cited
US2517808A
Cited
US2629017A
Cited
US2698875A
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 |