US2575223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supporting and driving structure for rotary tilling tines and the like
Assignee: DELAZON E MEAD
•
Filing: 1948-04-24
•
Granted: 1951-11-13
•
Expires: 1968-04-24
Abstract
No abstract record available.
Inventors
- 👤 Arthur R Madill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:56
CPC Classifications
A; A01; A01B; A01B33/00; A01B33/08; A01B33/082
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1893871A
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US1905384A
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US1944937A
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US2054129A
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US2129298A
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US2102822A
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US2366624A
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US2491892A
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US2509343A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |