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Patent US3446010A successfully refreshed from Google Patents.
US3446010A
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Assignee: Deere and Co
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Filing: 1967-12-11
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Granted: 1969-05-27
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Expires: 1987-12-11
Abstract
No abstract record available.
Inventors
- 👤 Richard Bruce Hopkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:20
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/08; F01N13/085; F01N2590/00; F01N2590/08; Y; Y10; Y10S; Y10S55/00; Y10S55/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-26 | 1972-11-25 | 1973-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-26 | 1976-11-25 | 1977-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-26 | 1980-11-25 | 1981-05-27 | $7700.00 | Window Closed / Lapsed |