Patent US2639953A successfully refreshed from Google Patents.
US2639953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearing assembly for absorbing vibrations of centrifuge spindles and the like
Assignee: De Laval Separator Co
•
Filing: 1951-01-02
•
Granted: 1953-05-26
•
Expires: 1971-01-02
Abstract
No abstract record available.
Inventors
- 👤 Cook James Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:21
CPC Classifications
F; F16; F16C; F16C27/00; F16C27/08; B; B04; B04B; B04B9/00; B04B9/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1956-05-25 | 1956-11-24 | 1957-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-25 | 1960-11-24 | 1961-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-25 | 1964-11-24 | 1965-05-26 | $7700.00 | Window Closed / Lapsed |