US2980806A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrected diode
Assignee: Northrop Grumman Guidance and Electronics Co Inc
•
Filing: 1957-04-22
•
Granted: 1961-04-18
•
Expires: 1977-04-22
Abstract
No abstract record available.
Inventors
- 👤 Donald L Ort
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:36
CPC Classifications
H; H03; H03G; H03G11/00; H03G11/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2584259A
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US2855559A
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US2759052A
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US2878398A
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US2698416A
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US2788449A
Cited
FR1131192A
Cited
US2863123A
Cited
US2767330A
Cited
US2780725A
Cited
US2850650A
Cited
US2860260A
Cited
US2873387A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |