US3502804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Video monitor indicating means
Assignee: Rank Organization Ltd
•
Filing: 1966-11-08
•
Granted: 1970-03-24
•
Expires: 1986-11-08
Abstract
No abstract record available.
Inventors
- 👤 John D Barr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:56
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/44; H04N5/445; H04N23/00; H04N23/60; H04N23/63
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2180944A
Cited
US3435136A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-23 | 1973-09-22 | 1974-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-23 | 1977-09-22 | 1978-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-23 | 1981-09-22 | 1982-03-24 | $7700.00 | Window Closed / Lapsed |