US3479453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Facsimile resolution improvement by utilization of a variable velocity sweep signal
Assignee: Xerox Corp
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Filing: 1965-01-04
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Granted: 1969-11-18
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Expires: 1985-01-04
Abstract
No abstract record available.
Inventors
- 👤 Stephen E Townsend
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:11
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/10; H04N3/30; H04N3/32; H04N1/00; H04N1/04; H04N1/17; H04N1/40; H04N1/409; H04N1/4092; H04N2201/00; H04N2201/04; H04N2201/0402; H04N2201/0458
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
AU1605034A
Cited
US2585002A
Cited
US2649555A
Cited
US2752421A
Cited
US3215773A
Cited
US3229033A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-17 | 1973-05-19 | 1973-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-17 | 1977-05-19 | 1977-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-17 | 1981-05-19 | 1981-11-18 | $7700.00 | Window Closed / Lapsed |