US2917636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency-regulated turbo generator
Assignee: General Electric Co
•
Filing: 1957-06-10
•
Granted: 1959-12-15
•
Expires: 1977-06-10
Abstract
No abstract record available.
Inventors
- 👤 Lloyd T Akeley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:05
CPC Classifications
F; F01; F01D; F01D15/00; F01D15/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1309808A
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US806154A
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US1202310A
Cited
US1002669A
Cited
US1035116A
Cited
US1751982A
Cited
US1704403A
Cited
US2308135A
Cited
US2642543A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |