US2833850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Subscriber television system
Assignee: General Precision Laboratory Inc
•
Filing: 1952-04-04
•
Granted: 1958-05-06
•
Expires: 1972-04-04
Abstract
No abstract record available.
Inventors
- 👤 Everhard H B Bartelink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:25
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/16; H04N7/167; H04N7/162; H04N7/165; H04N7/173; H04N7/17345; H04N7/17363; H04N2007/1739
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2567539A
Cited
US2574462A
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US2551068A
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US2545770A
Cited
US2678347A
Cited
US2612552A
Cited
US2619530A
Cited
US2673238A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |