US2575710A
Expired / Lapsed
US
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Apparatus for measuring rotor blade vibration
Assignee: Westinghouse Electric Corp
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Filing: 1949-12-09
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Granted: 1951-11-20
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Expires: 1969-12-09
Abstract
No abstract record available.
Inventors
- 👤 George W Hardigg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:24
CPC Classifications
G; G01; G01H; G01H1/00; G01H1/003; G01H1/006; F; F01; F01D; F01D21/00; F01D21/04; Y; Y10; Y10S; Y10S416/00; Y10S416/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-19 | 1955-05-21 | 1955-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-19 | 1959-05-21 | 1959-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-19 | 1963-05-21 | 1963-11-20 | $7700.00 | Window Closed / Lapsed |