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US2505609A
Expired / Lapsed
US
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Direct-coupled automatic release tractor plow
Assignee: MASSEY HARRIS CO Ltd
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Filing: 1945-09-24
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Granted: 1950-04-25
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Expires: 1965-09-24
Abstract
No abstract record available.
Inventors
- 👤 Ego George Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:24
CPC Classifications
A; A01; A01B; A01B63/00; A01B63/02; A01B63/023; A01B59/00; A01B59/06; A01B59/065; A01B61/00; A01B61/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1243019A
Cited
GB192556A
Cited
FR651742A
Cited
US2184422A
Cited
US2217900A
Cited
US2319670A
Cited
US2368266A
Cited
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 |