Patent US2787066A successfully refreshed from Google Patents.
US2787066A
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US
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Hydraulically operated land leveler
Assignee: Individual
•
Filing: 1954-04-05
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Granted: 1957-04-02
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Expires: 1974-04-05
Abstract
No abstract record available.
Inventors
- 👤 Lloyd T Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:00
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/80; E02F3/84; E02F3/841; A; A01; A01B; A01B31/00; A01B63/00; A01B63/14; A01B63/16; A01B63/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1107460A
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US1759982A
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US2244829A
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US2283744A
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US2635888A
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US2659166A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-01 | 1960-10-01 | 1961-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-01 | 1964-10-01 | 1965-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-01 | 1968-10-01 | 1969-04-02 | $7700.00 | Window Closed / Lapsed |