Patent US3393366A successfully refreshed from Google Patents.
US3393366A
Expired / Lapsed
US
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High precision motor speed control circuit utilizing binary counters and digital logic
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1964-06-05
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Granted: 1968-07-16
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Expires: 1984-06-05
Abstract
No abstract record available.
Inventors
- 👤 William F Shoop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:28
CPC Classifications
H; H02; H02P; H02P8/00
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) | 1971-07-16 | 1972-01-15 | 1972-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-16 | 1976-01-15 | 1976-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-16 | 1980-01-15 | 1980-07-16 | $7700.00 | Window Closed / Lapsed |