US2856544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductive pulse translator
Assignee: AT&T Inc
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Filing: 1956-04-18
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Granted: 1958-10-14
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Expires: 1976-04-18
Abstract
No abstract record available.
Inventors
- 👤 Ian M Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:58
CPC Classifications
H; H03; H03K; H03K23/00; H03K23/002; G; G11; G11C; G11C11/00; G11C11/21; G11C11/34; G11C11/35; G11C19/00; G11C19/28; H03K3/00; H03K3/02; H03K3/35; H10; H10D; H10D84/00; H10D84/60; H10D84/676; H10P; H10P95/00
Claims Analysis
Total Claims: 0
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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) | 1961-10-13 | 1962-04-14 | 1962-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-13 | 1966-04-14 | 1966-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-13 | 1970-04-14 | 1970-10-14 | $7700.00 | Window Closed / Lapsed |