US2329751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wear resistant bearing assembly
Assignee: Reed Roller Bit Co
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Filing: 1942-07-21
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Granted: 1943-09-21
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Expires: 1962-07-21
Abstract
No abstract record available.
Inventors
- 👤 George F Fermier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:28
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/08; E21B10/22; F; F16; F16C; F16C33/00; F16C33/30; F16C33/58; F16C33/581; F16C2352/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-09-20 | 1947-03-22 | 1947-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-09-20 | 1951-03-22 | 1951-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-09-20 | 1955-03-22 | 1955-09-21 | $7700.00 | Window Closed / Lapsed |