US2485827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propeller for aircraft
Assignee: HARTZELL INDUSTRIES
•
Filing: 1945-11-05
•
Granted: 1949-10-25
•
Expires: 1965-11-05
Abstract
No abstract record available.
Inventors
- 👤 Robert N Hartsell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:15
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/08; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1043; Y10T156/1044; Y10T442/00; Y10T442/30; Y10T442/3179; Y10T442/322; Y10T442/3472; Y10T442/3528; Y10T442/3569; Y10T442/3577
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1444959A
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US1433728A
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US1384308A
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US1365314A
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US1367132A
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US1504547A
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US1567574A
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US1875597A
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GB502409A
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US2202013A
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US2398388A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-24 | 1953-04-25 | 1953-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-24 | 1957-04-25 | 1957-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-24 | 1961-04-25 | 1961-10-25 | $7700.00 | Window Closed / Lapsed |