US2490027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure lubricated track tractor roller
Assignee: CARROLL PRESSURE ROLLER Corp
•
Filing: 1945-06-16
•
Granted: 1949-12-06
•
Expires: 1965-06-16
Abstract
No abstract record available.
Inventors
- 👤 John A Carr
- 👤 William C Carroll
- 👤 Robert D Pike
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:58
CPC Classifications
B; B62; B62D; B62D55/00; B62D55/08; B62D55/14; B62D55/15; B60; B60R; B60R17/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1323474A
Cited
US824187A
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US1743712A
Cited
US2325283A
Cited
US2299119A
Cited
US2362644A
Cited
US2377526A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-05 | 1953-06-06 | 1953-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-05 | 1957-06-06 | 1957-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-05 | 1961-06-06 | 1961-12-06 | $7700.00 | Window Closed / Lapsed |