US2823449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a ball bearing
Assignee: Fafnir Bearing Co
•
Filing: 1953-04-13
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Granted: 1958-02-18
•
Expires: 1973-04-13
Abstract
No abstract record available.
Inventors
- 👤 Howell L Potter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:27
CPC Classifications
F; F16; F16C; F16C43/00; F16C43/04; F16C43/06; B; B23; B23P; B23P15/00; B23P15/003; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49643; Y10T29/49679; Y10T29/49682; Y10T29/49684; Y10T29/49689
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US818734A
Cited
US1027542A
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US1051625A
Cited
US1165992A
Cited
US1269808A
Cited
US1854897A
Cited
US2243464A
Cited
US2466123A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-17 | 1961-08-19 | 1962-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-17 | 1965-08-19 | 1966-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-17 | 1969-08-19 | 1970-02-18 | $7700.00 | Window Closed / Lapsed |