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US2128273A
Expired / Lapsed
US
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Leveling device
Assignee: Caterpillar Global Mining LLC
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Filing: 1936-10-16
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Granted: 1938-08-30
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Expires: 1956-10-16
Abstract
No abstract record available.
Inventors
- 👤 Paul S Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:10
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/02; E02F9/028; B; B62; B62D; B62D55/00; B62D55/06; B62D55/065; B62D55/08; B62D55/104; B62D55/116
Claims Analysis
Total Claims: 0
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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) | 1941-08-29 | 1942-02-28 | 1942-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-08-29 | 1946-02-28 | 1946-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-08-29 | 1950-02-28 | 1950-08-30 | $7700.00 | Window Closed / Lapsed |