US2984453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibration damper for blading in elastic fluid apparatus
Assignee: Westinghouse Electric Corp
•
Filing: 1957-03-25
•
Granted: 1961-05-16
•
Expires: 1977-03-25
Abstract
No abstract record available.
Inventors
- 👤 Frank J Heymann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:25
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/14; F01D5/16; Y; Y10; Y10S; Y10S416/00; Y10S416/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2484141A
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US2646920A
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US2630868A
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US2636399A
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FR1024218A
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US2809802A
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US2828940A
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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) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |