US2518271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for reduction of cross talk between two coaxial pairs of a telephone cable
Assignee: Societe Anonyme de Telecommunications SAT
•
Filing: 1945-12-29
•
Granted: 1950-08-08
•
Expires: 1965-12-29
Abstract
No abstract record available.
Inventors
- 👤 Baranov Nathalie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:31
CPC Classifications
H; H04; H04B; H04B3/00; H04B3/02; H04B3/32; H04B3/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1762755A
Cited
US1871906A
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US1855288A
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US1928735A
Cited
US2092023A
Cited
US2038240A
Cited
US2105168A
Cited
US2243851A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-07 | 1954-02-06 | 1954-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-07 | 1958-02-06 | 1958-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-07 | 1962-02-06 | 1962-08-08 | $7700.00 | Window Closed / Lapsed |