Patent US2548446A successfully refreshed from Google Patents.
US2548446A
Expired / Lapsed
US
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System for receiving and decoding teletype messages
Assignee: SPX Technologies Inc
•
Filing: 1948-02-02
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Granted: 1951-04-10
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Expires: 1968-02-02
Abstract
No abstract record available.
Inventors
- 👤 Neil D Preston
- 👤 Forest B Hitchcock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:42
CPC Classifications
G; G08; G08G; G08G5/00; G08G5/20; G08G5/26; G08G5/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1174236A
Cited
US2248820A
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US2200802A
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US2193967A
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US2206550A
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US2237130A
Cited
US2246449A
Cited
US2424223A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-09 | 1954-10-09 | 1955-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-09 | 1958-10-09 | 1959-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-09 | 1962-10-09 | 1963-04-10 | $7700.00 | Window Closed / Lapsed |