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Patent US2689439A successfully refreshed from Google Patents.
US2689439A
Expired / Lapsed
US
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Cotton harvester
Assignee: J B LINKER
•
Filing: 1950-05-10
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Granted: 1954-09-21
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Expires: 1970-05-10
Abstract
No abstract record available.
Inventors
- 👤 Martin Fay Roots
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:56
CPC Classifications
A; A01; A01D; A01D46/00; A01D46/08; A01D46/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US685111A
Cited
US858371A
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US968856A
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US1225193A
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US1845431A
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US1926338A
Cited
US2489963A
Cited
US2493564A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-20 | 1958-03-22 | 1958-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-20 | 1962-03-22 | 1962-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-20 | 1966-03-22 | 1966-09-21 | $7700.00 | Window Closed / Lapsed |