Patent US3441945A successfully refreshed from Google Patents.
US3500375A
Expired / Lapsed
US
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Digital overspeed detector
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1967-02-21
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Granted: 1970-03-10
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Expires: 1987-02-21
Abstract
No abstract record available.
Inventors
- 👤 Robert G Klimo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:17
CPC Classifications
G; G01; G01P; G01P1/00; G01P1/07; G01P1/08; G01P1/10; G01P1/106
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3282099A
Cited
US3413449A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |