US2498700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Teleprinter exchange system
Assignee: Creed and Co Ltd
•
Filing: 1945-07-24
•
Granted: 1950-02-28
•
Expires: 1965-07-24
Abstract
No abstract record available.
Inventors
- 👤 Munck Leslie Stampe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:04
CPC Classifications
H; H04; H04L; H04L12/00; H04L12/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1872842A
Cited
US2193967A
Cited
GB466673A
Cited
GB479314A
Cited
US2088750A
Cited
GB512827A
Cited
US2242196A
Cited
US2381871A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-27 | 1953-08-29 | 1954-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-27 | 1957-08-29 | 1958-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-27 | 1961-08-29 | 1962-02-28 | $7700.00 | Window Closed / Lapsed |