Patent US913731A successfully refreshed from Google Patents.
US913731A
Expired / Lapsed
US
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Turbine-motor.
Assignee: Individual
•
Filing: 1908-05-25
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Granted: 1909-03-02
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Expires: 1928-05-25
Abstract
No abstract record available.
Inventors
- 👤 Harry E Kay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:19
CPC Classifications
F; F03; F03B; F03B3/00; F04; F04D; F04D19/00; F04D19/02; F04D19/026; Y; Y02; Y02E; Y02E10/00; Y02E10/20
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) | 1912-03-01 | 1912-08-31 | 1913-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-03-01 | 1916-08-31 | 1917-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-03-01 | 1920-08-31 | 1921-03-02 | $7700.00 | Window Closed / Lapsed |