US2764075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversible plow
Assignee: E L Caldwell & Sons
•
Filing: 1953-03-19
•
Granted: 1956-09-25
•
Expires: 1973-03-19
Abstract
No abstract record available.
Inventors
- 👤 Fowler Byron Leo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:31
CPC Classifications
A; A01; A01B; A01B5/00; A01B5/04; A01B5/08; A01B3/00; A01B3/24; A01B3/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2675749A
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US2163832A
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US2600359A
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US2578942A
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US2648267A
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US2561032A
Cited
US2672801A
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US2582337A
Cited
US2723612A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |