US2816156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Subscription television system
Assignee: Zenith Electronics LLC
•
Filing: 1951-06-08
•
Granted: 1957-12-10
•
Expires: 1971-06-08
Abstract
No abstract record available.
Inventors
- 👤 Myron G Pawley
- 👤 Jacob M Sacks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:26
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/16; H04N7/167
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2539556A
Cited
US2472774A
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US2510046A
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US2547598A
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US2577141A
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US2519513A
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US2567545A
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US2574462A
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US2656407A
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US2685644A
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US2545770A
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US2619530A
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US2573349A
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US2757226A
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US2640164A
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US2610243A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-09 | 1961-06-10 | 1961-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-09 | 1965-06-10 | 1965-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-09 | 1969-06-10 | 1969-12-10 | $7700.00 | Window Closed / Lapsed |