Patent US2168053A successfully refreshed from Google Patents.
US2168053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endless track mechanism
Assignee: Caterpillar Inc
•
Filing: 1934-08-25
•
Granted: 1939-08-01
•
Expires: 1954-08-25
Abstract
No abstract record available.
Inventors
- 👤 Oscar L Starr
- 👤 Jose Mission San
- 👤 Grothe Walter
- 👤 Harmon S Eberhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:03
CPC Classifications
B; B62; B62D; B62D55/00; B62D55/08; B62D55/18; B62D55/26; B62D55/28
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1942-07-31 | 1943-01-30 | 1943-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-07-31 | 1947-01-30 | 1947-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-07-31 | 1951-01-30 | 1951-08-01 | $7700.00 | Window Closed / Lapsed |