Patent US2473778A successfully refreshed from Google Patents.
Patent US2974190A successfully refreshed from Google Patents.
US2974190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic matting apparatus
Assignee: CBS Broadcasting Inc
•
Filing: 1957-12-09
•
Granted: 1961-03-07
•
Expires: 1977-12-09
Abstract
No abstract record available.
Inventors
- 👤 Joseph R Geiger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:24
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/64; H04N9/74; H04N9/75; H04N5/00; H04N5/222; H04N5/262; H04N5/272
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2113473A
Cited
US2490561A
Cited
US2611819A
Cited
US2730565A
Cited
US2784246A
Cited
US2808455A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-06 | 1964-09-05 | 1965-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-06 | 1968-09-05 | 1969-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-06 | 1972-09-05 | 1973-03-07 | $7700.00 | Window Closed / Lapsed |