US3498387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Field conditioner
Assignee: Deere and Co
•
Filing: 1967-09-27
•
Granted: 1970-03-03
•
Expires: 1987-09-27
Abstract
No abstract record available.
Inventors
- 👤 Robert Richard Roth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:51
CPC Classifications
A; A01; A01B; A01B35/00; A01B35/02; A01B35/04; A01B35/06; A01B73/00; A01B73/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US402670A
Cited
US2970658A
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US2944615A
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US3021908A
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US3014540A
Cited
US3033296A
Cited
US3154151A
Cited
US3308891A
Cited
US3327787A
Cited
US3337242A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-02 | 1973-09-01 | 1974-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-02 | 1977-09-01 | 1978-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-02 | 1981-09-01 | 1982-03-03 | $7700.00 | Window Closed / Lapsed |