US2505580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct-coupled tractor plow
Assignee: MASSEY HARRIS CO
•
Filing: 1945-02-19
•
Granted: 1950-04-25
•
Expires: 1965-02-19
Abstract
No abstract record available.
Inventors
- 👤 Everett W Todd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:15
CPC Classifications
A; A01; A01B; A01B3/00; A01B3/36; A01B3/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1953-04-24 | 1953-10-24 | 1954-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-24 | 1957-10-24 | 1958-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-24 | 1961-10-24 | 1962-04-25 | $7700.00 | Window Closed / Lapsed |