Patent US2537199A successfully refreshed from Google Patents.
US2537199A
Expired / Lapsed
US
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Facsimile switching system
Assignee: Western Union Telegraph Co
•
Filing: 1948-05-18
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Granted: 1951-01-09
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Expires: 1968-05-18
Abstract
No abstract record available.
Inventors
- 👤 Raleigh J Wise
- 👤 Marvin J Reynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:28
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/0035; H04N1/00352; H04N1/00355; H04N1/00358; H04N1/00366; H04N1/00368; H04N1/00374; H04N1/32; H04N1/32037; H04N1/32042; H04N1/32358; H04N1/32363; H04N1/32368; H04N1/32374
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2193967A
Cited
US2265339A
Cited
US2392356A
Cited
US2430447A
Cited
US2351231A
Cited
US2396286A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |