US2621575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Depth control of tractor-carried agricultural implements
Assignee: Overums Bruk AB
•
Filing: 1945-08-03
•
Granted: 1952-12-16
•
Expires: 1965-08-03
Abstract
No abstract record available.
Inventors
- 👤 Berg Claes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:49
CPC Classifications
A; A01; A01B; A01B63/00; A01B63/02; A01B63/10; A01B63/111; A01B63/114
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE311361C
Cited
US534426A
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US534403A
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US1687719A
Cited
US2118180A
Cited
US2118181A
Cited
GB520484A
Cited
GB541436A
Cited
US2405334A
Cited
US2356231A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |