US2498911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control of end clearances of rotors
Assignee: Keelavite Co Ltd
•
Filing: 1947-05-27
•
Granted: 1950-02-28
•
Expires: 1967-05-27
Abstract
No abstract record available.
Inventors
- 👤 Chittenden George Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:53
CPC Classifications
G; G01; G01B; G01B5/00; G01B5/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1620261A
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US1673259A
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US1642454A
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FR671114A
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US2236980A
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US2319374A
Cited
US2346761A
Cited
US2420622A
Cited
US2391072A
Cited
US2412588A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-27 | 1953-08-29 | 1954-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-27 | 1957-08-29 | 1958-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-27 | 1961-08-29 | 1962-02-28 | $7700.00 | Window Closed / Lapsed |