US2936404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Current supply apparatus
Assignee: AT&T Inc
•
Filing: 1957-08-14
•
Granted: 1960-05-10
•
Expires: 1977-08-14
Abstract
No abstract record available.
Inventors
- 👤 Carl F Simone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:11
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/18; G; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB472326A
Cited
US2407458A
Cited
US2697201A
Cited
US2790132A
Cited
US2749512A
Cited
US2791719A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-10 | 1963-11-09 | 1964-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-10 | 1967-11-09 | 1968-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-10 | 1971-11-09 | 1972-05-10 | $7700.00 | Window Closed / Lapsed |