US2990220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearing retainer and seal structure for tractor track roller
Assignee: Individual
•
Filing: 1959-10-12
•
Granted: 1961-06-27
•
Expires: 1979-10-12
Abstract
No abstract record available.
Inventors
- 👤 Malone Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:04
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/72; F16C33/76; F16C33/78; F16C33/7886; B; B62; B62D; B62D55/00; B62D55/08; B62D55/14; B62D55/15; F16C33/7803; F16C33/7813
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) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |