US2827910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical speed control system for engines
Assignee: General Electric Co
•
Filing: 1951-12-29
•
Granted: 1958-03-25
•
Expires: 1971-12-29
Abstract
No abstract record available.
Inventors
- 👤 Bruce A Wells
- 👤 Clinton C Lawry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:29
CPC Classifications
H; H02; H02P; H02P23/00; H02P23/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2609868A
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US2496730A
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US2650471A
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US2662372A
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US2582305A
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US2594436A
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US2648194A
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US2595034A
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US2583339A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-24 | 1961-09-23 | 1962-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-24 | 1965-09-23 | 1966-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-24 | 1969-09-23 | 1970-03-25 | $7700.00 | Window Closed / Lapsed |