Patent US2707424A successfully refreshed from Google Patents.
US2707424A
Expired / Lapsed
US
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Attachment for tractor drawn plow
Assignee: Individual
•
Filing: 1950-03-28
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Granted: 1955-05-03
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Expires: 1970-03-28
Abstract
No abstract record available.
Inventors
- 👤 Henry G Marvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:43
CPC Classifications
A; A01; A01B; A01B59/00; A01B59/04; A01B59/041; A01B15/00; A01B15/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US663744A
Cited
US1301744A
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US1377050A
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US1397748A
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US1912039A
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US1871097A
Cited
US2137829A
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US2243306A
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US2339830A
Cited
US2372403A
Cited
US2577002A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-02 | 1958-11-01 | 1959-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-02 | 1962-11-01 | 1963-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-02 | 1966-11-01 | 1967-05-03 | $7700.00 | Window Closed / Lapsed |