Patent US2674171A successfully refreshed from Google Patents.
US2674171A
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US
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Draft unit for wheel tractors
Assignee: Individual
•
Filing: 1948-03-06
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Granted: 1954-04-06
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Expires: 1968-03-06
Abstract
No abstract record available.
Inventors
- 👤 Claude L Metz
- 👤 Noble L Metz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:29
CPC Classifications
A; A01; A01B; A01B35/00; A01B35/02; A01B35/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1378842A
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US2167210A
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US2264575A
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US2352281A
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US2440550A
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US2429552A
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US2618212A
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US2567736A
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US2456693A
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US2492573A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |