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US2601776A
Expired / Lapsed
US
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Method of determining soil pressures produced on the soil working surfaces of ground engaging tools
Assignee: DEARBORN MOTORS Corp
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Filing: 1949-09-03
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Granted: 1952-07-01
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Expires: 1969-09-03
Abstract
No abstract record available.
Inventors
- 👤 Ralph C Frevik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:35
CPC Classifications
G; G01; G01L; G01L5/00; G01L5/0061; G01L1/00; G01L1/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR524164A
Cited
US2314753A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-01 | 1955-12-31 | 1956-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-01 | 1959-12-31 | 1960-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-01 | 1963-12-31 | 1964-07-01 | $7700.00 | Window Closed / Lapsed |