US3036392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telescoping land leveler
Assignee: MARVIN LANDPLANE Co
•
Filing: 1960-07-19
•
Granted: 1962-05-29
•
Expires: 1980-07-19
Abstract
No abstract record available.
Inventors
- 👤 Ralph T Marvin
- 👤 Alvin N Rocksvold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:04
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/7663; E02F3/7672
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2124625A
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US2197401A
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US2420319A
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GB575666A
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US2526130A
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US2648920A
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DE833567C
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US2719369A
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US2801864A
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US2842972A
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US2870555A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-28 | 1965-11-27 | 1966-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-28 | 1969-11-27 | 1970-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-28 | 1973-11-27 | 1974-05-29 | $7700.00 | Window Closed / Lapsed |