US2803428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for minimizing cavitation and pitting in hydraulic turbines
Assignee: Individual
•
Filing: 1952-07-21
•
Granted: 1957-08-20
•
Expires: 1972-07-21
Abstract
No abstract record available.
Inventors
- 👤 William R Garnett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:24
CPC Classifications
F; F03; F03B; F03B15/00; F03B15/02; F03B15/04; F03B15/06; F03B15/18; Y; Y02; Y02E; Y02E10/00; Y02E10/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE498572A
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US1823624A
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US1860618A
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US2079258A
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FR878999A
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US2295495A
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US2625367A
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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) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |