US2843756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical scanning apparatus for facsimile transmitters
Assignee: Western Union Telegraph Co
•
Filing: 1951-07-06
•
Granted: 1958-07-15
•
Expires: 1971-07-06
Abstract
No abstract record available.
Inventors
- 👤 Raleigh J Wise
- 👤 Garvice H Ridings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:05
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/40; H04N1/407; H04N1/4072
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2041079A
Cited
US1985044A
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US2086865A
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US2278920A
Cited
US2358103A
Cited
US2319898A
Cited
US2408023A
Cited
US2459293A
Cited
US2524651A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-14 | 1962-01-13 | 1962-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-14 | 1966-01-13 | 1966-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-14 | 1970-01-13 | 1970-07-15 | $7700.00 | Window Closed / Lapsed |