US2938974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor speed governor
Assignee: Motorola Solutions Inc
•
Filing: 1956-10-19
•
Granted: 1960-05-31
•
Expires: 1976-10-19
Abstract
No abstract record available.
Inventors
- 👤 Querfurth Wilhelm Max Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:04
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/06; H01H35/10; H02; H02K; H02K11/00; H02K11/20; H02K11/21; H02K11/23
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1870896A
Cited
US1855703A
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US2098226A
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US1984512A
Cited
US2084907A
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US2048494A
Cited
US2438810A
Cited
US2617904A
Cited
US2719945A
Cited
US2748333A
Cited
US2762229A
Cited
US2794163A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |