US2840344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for reduction of runaway speeds of propeller turbines with adjustable runner blades
Assignee: Nydqvist and Holm AB
•
Filing: 1953-02-25
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Granted: 1958-06-24
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Expires: 1973-02-25
Abstract
No abstract record available.
Inventors
- 👤 Stage Ernest Erik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:20
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)
CH127850A
Cited
FR661104A
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US1931158A
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US1948478A
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US1950775A
Cited
US1950776A
Cited
US1962382A
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US2284295A
Cited
US2310994A
Cited
US2407454A
Cited
US2382108A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |