US2896128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lightning surge protecting apparatus
Assignee: AT&T Inc
•
Filing: 1954-03-05
•
Granted: 1959-07-21
•
Expires: 1974-03-05
Abstract
No abstract record available.
Inventors
- 👤 Calvin S Fuller
- 👤 Gerald L Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:09
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/738; H04M1/74; H04M1/745; E; E04; E04C; E04C5/00; E04C5/01; E04C5/06; E04C5/065; H01; H01C; H01C7/00; H01C7/10; H01C7/12; H01T; H01T1/00; H01T1/14; H02; H02H; H02H9/00; H02H9/04; H02H9/044; H10; H10D; H10D99/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1745690A
Cited
GB551443A
Cited
GB643646A
Cited
US2672528A
Cited
US2619518A
Cited
US2680220A
Cited
US2714702A
Cited
US2655625A
Cited
US2669635A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-20 | 1963-01-19 | 1963-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-20 | 1967-01-19 | 1967-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-20 | 1971-01-19 | 1971-07-21 | $7700.00 | Window Closed / Lapsed |