US2861738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blades, guide vanes, and the like for fans, turbines and the like
Assignee: Plannair Ltd
•
Filing: 1955-07-21
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Granted: 1958-11-25
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Expires: 1975-07-21
Abstract
No abstract record available.
Inventors
- 👤 Rundle Eric William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:15
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/26; F04D29/32; F04D29/321; F04D29/324
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE509627A
Cited
GB190627409A
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US1518502A
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CH123788A
Cited
US1997506A
Cited
US1958145A
Cited
GB511278A
Cited
US2378372A
Cited
US2430140A
Cited
US2552118A
Cited
US2606713A
Cited
FR1077420A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-24 | 1962-05-26 | 1962-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-24 | 1966-05-26 | 1966-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-24 | 1970-05-26 | 1970-11-25 | $7700.00 | Window Closed / Lapsed |