Patent US3581519A successfully refreshed from Google Patents.
US974496A
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US
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Turbine vane and wheel.
Assignee: Individual
•
Filing: 1910-01-13
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Granted: 1910-11-01
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Expires: 1930-01-13
Abstract
No abstract record available.
Inventors
- 👤 Duston Kemble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:06
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/30; F01D5/32; F01D5/326; F01D5/3007; F05; F05D; F05D2220/00; F05D2220/30; F05D2220/31
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1913-10-31 | 1914-05-02 | 1914-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-10-31 | 1918-05-02 | 1918-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-10-31 | 1922-05-02 | 1922-11-01 | $7700.00 | Window Closed / Lapsed |