US3458801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High voltage operational amplifier for use as an electronically controllable power supply regulator
Assignee: Northrop Grumman Guidance and Electronics Co Inc
•
Filing: 1967-06-01
•
Granted: 1969-07-29
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Expires: 1987-06-01
Abstract
No abstract record available.
Inventors
- 👤 Lawrence L Polson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:31
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/56; G05F1/575
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3160807A
Cited
US3174093A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |