US2498072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blade seal for propeller spinners
Assignee: Curtiss Wright Corp
•
Filing: 1945-08-24
•
Granted: 1950-02-21
•
Expires: 1965-08-24
Abstract
No abstract record available.
Inventors
- 👤 George A Dean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:07
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/02; B64C11/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2440115A
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US2083992A
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GB518873A
Cited
US2210190A
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US2289400A
Cited
US2329606A
Cited
FR882261A
Cited
US2402114A
Cited
US2421841A
Cited
US2440394A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-20 | 1953-08-22 | 1954-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-20 | 1957-08-22 | 1958-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-20 | 1961-08-22 | 1962-02-21 | $7700.00 | Window Closed / Lapsed |