US2928698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-ring rotary bearing
Assignee: Individual
•
Filing: 1954-10-19
•
Granted: 1960-03-15
•
Expires: 1974-10-19
Abstract
No abstract record available.
Inventors
- 👤 Feighofen Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:09
CPC Classifications
F; F16; F16C; F16C23/00; F16C23/02; F16C23/04; F16C23/043; F16C23/045
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US48217A
Cited
US312822A
Cited
US1175288A
Cited
US1300023A
Cited
US1720139A
Cited
DE556052C
Cited
US1755570A
Cited
DE511760C
Cited
US2239834A
Cited
US2352206A
Cited
US2366668A
Cited
US2464492A
Cited
US2423684A
Cited
US2462138A
Cited
DE815872C
Cited
US2729179A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |