Patent US3411136A successfully refreshed from Google Patents.
US3411136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic commutator
Assignee: United States Department of the Army
•
Filing: 1966-01-25
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Granted: 1968-11-12
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Expires: 1986-01-25
Abstract
No abstract record available.
Inventors
- 👤 Jr Arthur W Ellis
- 👤 Albert A Black
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:25
CPC Classifications
H; H03; H03K; H03K19/00; H03K19/02; H03K19/173; H03K17/00; H03K17/51; H03K17/74
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2931014A
Cited
US3165702A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-12 | 1972-05-13 | 1972-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-12 | 1976-05-13 | 1976-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-12 | 1980-05-13 | 1980-11-12 | $7700.00 | Window Closed / Lapsed |