Patent US2202009A successfully refreshed from Google Patents.
US2202009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leveling device
Assignee: Caterpillar Global Mining LLC
•
Filing: 1938-05-21
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Granted: 1940-05-28
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Expires: 1958-05-21
Abstract
No abstract record available.
Inventors
- 👤 Samuel L G Knox
- 👤 Jr Francis O Blackwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:11
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) | 1943-05-28 | 1943-11-27 | 1944-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-05-28 | 1947-11-27 | 1948-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-05-28 | 1951-11-27 | 1952-05-28 | $7700.00 | Window Closed / Lapsed |