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Patent US2845618A successfully refreshed from Google Patents.
US2845618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Television viewing device
Assignee: Allen B du Mont Laboratories Inc
•
Filing: 1954-01-11
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Granted: 1958-07-29
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Expires: 1974-01-11
Abstract
No abstract record available.
Inventors
- 👤 Charles E Huffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:16
CPC Classifications
H; H04; H04N; H04N13/00; H04N13/10; H04N13/106; H04N13/161; G; G01; G01N; G01N21/00; G01N21/17; G01N21/21; G02; G02B; G02B27/00; G02B27/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2514828A
Cited
US2665335A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-28 | 1962-01-27 | 1962-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-28 | 1966-01-27 | 1966-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-28 | 1970-01-27 | 1970-07-29 | $7700.00 | Window Closed / Lapsed |