US2648719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concentric electric cable with interlocking tubular supports
Assignee: Telegraph Construction and Maintenance Co Ltd
•
Filing: 1947-10-20
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Granted: 1953-08-11
•
Expires: 1967-10-20
Abstract
No abstract record available.
Inventors
- 👤 Smith Esmond Wassell
- 👤 Jones Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:54
CPC Classifications
H; H01; H01B; H01B11/00; H01B11/18; H01B11/1834
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US535084A
Cited
FR754322A
Cited
FR568343A
Cited
GB433711A
Cited
FR807149A
Cited
US2169108A
Cited
US2257259A
Cited
US2470631A
Cited
US2451413A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-10 | 1957-02-09 | 1957-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-10 | 1961-02-09 | 1961-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-10 | 1965-02-09 | 1965-08-11 | $7700.00 | Window Closed / Lapsed |