Patent US2947581A successfully refreshed from Google Patents.
US2947581A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relatively rolling elements
Assignee: Fafnir Bearing Co
•
Filing: 1955-11-17
•
Granted: 1960-08-02
•
Expires: 1975-11-17
Abstract
No abstract record available.
Inventors
- 👤 Horace Bishop Van Dorn
- 👤 Moran Ronald Wesson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:35
CPC Classifications
F; F16; F16C; F16C23/00; F16C23/06; F16C23/08; F16C27/00; F16C27/04; F16C33/00; F16C33/30; F16C33/34; F16C33/58
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) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |