US2805838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotors for turbines and similarly bladed fluid flow machines
Assignee: Power Jets Research and Development Ltd
•
Filing: 1951-06-15
•
Granted: 1957-09-10
•
Expires: 1971-06-15
Abstract
No abstract record available.
Inventors
- 👤 Pickup George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:08
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US700314A
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GB169012A
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US1687891A
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US2221672A
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GB532372A
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US2271971A
Cited
US2326145A
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US2623357A
Cited
US2565594A
Cited
US2553078A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-09 | 1961-03-11 | 1961-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-09 | 1965-03-11 | 1965-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-09 | 1969-03-11 | 1969-09-10 | $7700.00 | Window Closed / Lapsed |