Patent US2558822A successfully refreshed from Google Patents.
US2558822A
Expired / Lapsed
US
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Depth control hood mechanism for soil-working rotors
Assignee: Individual
•
Filing: 1945-08-09
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Granted: 1951-07-03
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Expires: 1965-08-09
Abstract
No abstract record available.
Inventors
- 👤 Walter E Claus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:18
CPC Classifications
A; A01; A01B; A01B33/00; A01B33/08; A01B33/087
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1425305A
Cited
US1614356A
Cited
US1600215A
Cited
US1676646A
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US1830565A
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GB343941A
Cited
US2012434A
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US2214702A
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US2306902A
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US2333980A
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US2366386A
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US2370777A
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US2442731A
Cited
US2450749A
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US2428973A
Cited
US2466594A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-02 | 1955-01-01 | 1955-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-02 | 1959-01-01 | 1959-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-02 | 1963-01-01 | 1963-07-03 | $7700.00 | Window Closed / Lapsed |