US3417320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low noise control circuit
Assignee: Sprague Electric Co
•
Filing: —
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Granted: 1968-12-17
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Expires: 1985-12-17
Abstract
No abstract record available.
Inventors
- 👤 Nicholas G Muskovac
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:17
CPC Classifications
H; H02; H02M; H02M1/00; H02M1/08; H02M1/083; G; G05; G05D; G05D23/00; G05D23/19; G05D23/1906; G05D23/20; G05D23/24; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/40; G05F1/44; G05F1/45; G05F1/452
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3128422A
Cited
US3193725A
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US3095513A
Cited
US3188490A
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US3210571A
Cited
US3259832A
Cited
US3351820A
Cited
US3348129A
Cited
US3283177A
Cited
US3335291A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-17 | 1972-06-17 | 1972-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-17 | 1976-06-17 | 1976-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-17 | 1980-06-17 | 1980-12-17 | $7700.00 | Window Closed / Lapsed |