US3429979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulated electric power cables
Assignee: Balfour Beatty PLC
•
Filing: 1967-05-02
•
Granted: 1969-02-25
•
Expires: 1987-05-02
Abstract
No abstract record available.
Inventors
- 👤 Edward Leslie Davey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:37
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/17; H01B7/29; H01B9/00; H01B9/06; H01B9/0611
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA449855A
Cited
US2161413A
Cited
GB617699A
Cited
US2861119A
Cited
US3084208A
Cited
US2985708A
Cited
US3363046A
Cited
GB1389838A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |