US2543765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Winch for convertible draglines and shovels
Assignee: Caterpillar Global Mining LLC
•
Filing: 1947-02-05
•
Granted: 1951-03-06
•
Expires: 1967-02-05
Abstract
No abstract record available.
Inventors
- 👤 Trevor O Davidson
- 👤 Bruno L Lonngren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:20
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/20; E02F9/2016
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US624810A
Cited
US1899901A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-05 | 1954-09-04 | 1955-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-05 | 1958-09-04 | 1959-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-05 | 1962-09-04 | 1963-03-06 | $7700.00 | Window Closed / Lapsed |