US2809532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic steering mechanism
Assignee: Deere Manufacturing Co
•
Filing: 1953-12-01
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Granted: 1957-10-15
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Expires: 1973-12-01
Abstract
No abstract record available.
Inventors
- 👤 Lloyd D Ethington
- 👤 Walter W Donahue
- 👤 George V Dow
- 👤 Robert W Giertz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:00
CPC Classifications
B; B62; B62D; B62D5/00; B62D5/06; B62D5/20; B62D5/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1389620A
Cited
US1565754A
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US1857897A
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US2144769A
Cited
US2347364A
Cited
US2679165A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-14 | 1961-04-15 | 1961-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-14 | 1965-04-15 | 1965-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-14 | 1969-04-15 | 1969-10-15 | $7700.00 | Window Closed / Lapsed |