Patent US2539683A successfully refreshed from Google Patents.
US2539683A
Expired / Lapsed
US
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Roller thrust bearing
Assignee: Individual
•
Filing: 1946-11-05
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Granted: 1951-01-30
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Expires: 1966-11-05
Abstract
No abstract record available.
Inventors
- 👤 Ablett Charles Antony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:43
CPC Classifications
F; F16; F16C; F16C19/00; F16C19/22; F16C19/30; F16C33/00; F16C33/30; F16C33/46; F16C33/4688; F16C33/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-29 | 1954-07-31 | 1955-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-29 | 1958-07-31 | 1959-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-29 | 1962-07-31 | 1963-01-30 | $7700.00 | Window Closed / Lapsed |