Patent US2940533A successfully refreshed from Google Patents.
US2940533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-wheeled tractor
Assignee: Doosan Bobcat North America Inc
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Filing: 1957-01-24
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Granted: 1960-06-14
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Expires: 1977-01-24
Abstract
No abstract record available.
Inventors
- 👤 Paul F Mcadams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:35
CPC Classifications
B; B62; B62D; B62D53/00; B62D53/02; B62D53/021; E; E02; E02F; E02F3/00; E02F3/04; E02F3/64; E02F3/6454; E02F3/65; E02F3/653
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |