US2425938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circulating ball race propeller blade bearing
Assignee: Individual
•
Filing: 1943-09-15
•
Granted: 1947-08-19
•
Expires: 1963-09-15
Abstract
No abstract record available.
Inventors
- 👤 Walter S Hoover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:49
CPC Classifications
F; F16; F16C; F16C19/00; F16C19/50; F16C19/502; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19698; Y10T74/19702; Y10T74/19744; Y10T74/19749; Y10T74/19767; Y10T74/19772
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US488778A
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FR378524A
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GB131475A
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FR587378A
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US1704031A
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US1921942A
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US1851874A
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US1955688A
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FR688552A
Cited
GB486614A
Cited
US2159225A
Cited
US2298011A
Cited
US2343507A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-08-18 | 1951-02-17 | 1951-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-18 | 1955-02-17 | 1955-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-18 | 1959-02-17 | 1959-08-19 | $7700.00 | Window Closed / Lapsed |