US2449159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tractor cultivator
Assignee: Deere and Co
•
Filing: 1945-02-03
•
Granted: 1948-09-14
•
Expires: 1965-02-03
Abstract
No abstract record available.
Inventors
- 👤 Brown Theophilus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:33
CPC Classifications
B; B62; B62D; B62D49/00; B62D49/06; B62D49/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1085438A
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US1476687A
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US1472888A
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US1671507A
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US1776242A
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US1769103A
Cited
US2134848A
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US2341181A
Cited
US2296501A
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US2364367A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-14 | 1952-03-15 | 1952-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-14 | 1956-03-15 | 1956-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-14 | 1960-03-15 | 1960-09-14 | $7700.00 | Window Closed / Lapsed |