Patent US2618539A successfully refreshed from Google Patents.
Patent US4318841A successfully refreshed from Google Patents.
Patent US3452319A successfully refreshed from Google Patents.
US3452319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coaxial cables
Assignee: AT&T Inc
•
Filing: 1967-11-29
•
Granted: 1969-06-24
•
Expires: 1987-11-29
Abstract
No abstract record available.
Inventors
- 👤 Raymond A Kempf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:48
CPC Classifications
H; H01; H01R; H01R9/00; H01R9/03; H01R9/05; H01R9/0509; H01B; H01B11/00; H01B11/18; H01B11/1808; H01B11/1826; H01R4/00; H01R4/24
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1972-06-23 | 1972-12-23 | 1973-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-23 | 1976-12-23 | 1977-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-23 | 1980-12-23 | 1981-06-24 | $7700.00 | Window Closed / Lapsed |