US3384426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contoured race for roller bearings
Assignee: Reed Roller Bit Co
•
Filing: 1965-05-14
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Granted: 1968-05-21
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Expires: 1985-05-14
Abstract
No abstract record available.
Inventors
- 👤 Jr Percy W Schumacher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:53
CPC Classifications
F; F16; F16C; F16C41/00; F16C41/02; E; E21; E21B; E21B10/00; E21B10/08; E21B10/22; F16C33/00; F16C33/30; F16C33/58; F16C33/581; F16C2352/00
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) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |