Patent US2676305A successfully refreshed from Google Patents.
US2676305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isothermal electric cables
Assignee: AT&T Inc
•
Filing: 1950-12-12
•
Granted: 1954-04-20
•
Expires: 1970-12-12
Abstract
No abstract record available.
Inventors
- 👤 Fondiller William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:07
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/32; H01B7/324
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1835080A
Cited
US1900831A
Cited
US2057529A
Cited
US1956715A
Cited
US2020128A
Cited
US2475309A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-19 | 1957-10-19 | 1958-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-19 | 1961-10-19 | 1962-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-19 | 1965-10-19 | 1966-04-20 | $7700.00 | Window Closed / Lapsed |