US2824908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Television system method and apparatus for multiplex signaling
Assignee: Allen B du Mont Laboratories Inc
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Filing: 1952-08-07
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Granted: 1958-02-25
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Expires: 1972-08-07
Abstract
No abstract record available.
Inventors
- 👤 Richard C Palmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:02
CPC Classifications
H; H04; H04N; H04N11/00; H04N11/02; H04J; H04J3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2474244A
Cited
US2465371A
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US2498678A
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US2677720A
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US2684995A
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US2641642A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-24 | 1961-08-26 | 1962-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-24 | 1965-08-26 | 1966-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-24 | 1969-08-26 | 1970-02-25 | $7700.00 | Window Closed / Lapsed |