US2539174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulically controlled tractor mounted hoe
Assignee: COWAN
•
Filing: 1947-02-04
•
Granted: 1951-01-23
•
Expires: 1967-02-04
Abstract
No abstract record available.
Inventors
- 👤 Baideme Anthony
- 👤 Edgar M Cowan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:23
CPC Classifications
A; A01; A01B; A01B63/00; A01B63/02; A01B63/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2227423A
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US2250073A
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US2349906A
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US2341824A
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US2370901A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-22 | 1954-07-24 | 1955-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-22 | 1958-07-24 | 1959-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-22 | 1962-07-24 | 1963-01-23 | $7700.00 | Window Closed / Lapsed |