Patent US2425019A successfully refreshed from Google Patents.
US2425019A
Expired / Lapsed
US
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System and apparatus for facsimile telegraphy
Assignee: Western Union Telegraph Co
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Filing: 1942-04-04
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Granted: 1947-08-05
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Expires: 1962-04-04
Abstract
No abstract record available.
Inventors
- 👤 Raleigh J Wise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:26
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/00519; H04N1/32; H04N1/32101; H04N2201/00; H04N2201/32; H04N2201/3201; H04N2201/3212; H04N2201/3219; H04N2201/3273
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1232776A
Cited
US1909838A
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US2026162A
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US2193967A
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US2255869A
Cited
US2265339A
Cited
US2279295A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-08-04 | 1951-02-03 | 1951-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-04 | 1955-02-03 | 1955-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-04 | 1959-02-03 | 1959-08-05 | $7700.00 | Window Closed / Lapsed |