US2540164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-frequency coaxial cable having a double layer inner conductor
Assignee: Telegraph Construction and Maintenance Co Ltd
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Filing: 1946-10-28
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Granted: 1951-02-06
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Expires: 1966-10-28
Abstract
No abstract record available.
Inventors
- 👤 Dean John Norman
- 👤 Smith Esmond Wassell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:41
CPC Classifications
H; H01; H01B; H01B11/00; H01B11/18; H01B11/1804
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-05 | 1954-08-07 | 1955-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-05 | 1958-08-07 | 1959-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-05 | 1962-08-07 | 1963-02-06 | $7700.00 | Window Closed / Lapsed |