Patent US1933117A successfully refreshed from Google Patents.
Patent US2965767A successfully refreshed from Google Patents.
US2965767A
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Input circuits and matrices employing zener diodes as voltage breakdown gating elements
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1955-07-15
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Granted: 1960-12-20
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Expires: 1975-07-15
Abstract
No abstract record available.
Inventors
- 👤 Cravens L Wanlass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:26
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/21; G11C11/34; G11C11/40; G11C11/41; G11C11/411; G11C11/4113; G11C19/00; G11C19/28; H; H03; H03K; H03K19/00; H03K19/02; H03K19/12
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |