Patent US962052A successfully refreshed from Google Patents.
Patent US2805276A successfully refreshed from Google Patents.
US2805276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-frequency transmission cables
Assignee: AT&T Inc
•
Filing: 1951-06-22
•
Granted: 1957-09-03
•
Expires: 1971-06-22
Abstract
No abstract record available.
Inventors
- 👤 Edward W Weitzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:47
CPC Classifications
H; H01; H01P; H01P3/00; H01P3/02; H01P3/04; H01B; H01B7/00; H01B7/02; H01B7/0233
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1305247A
Cited
US1977325A
Cited
GB397262A
Cited
GB440596A
Cited
US2204782A
Cited
US2186793A
Cited
US2354260A
Cited
US2556224A
Cited
US2480170A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |