US3417495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Terracing, grading and leveling device
Assignee: Individual
•
Filing: 1965-12-06
•
Granted: 1968-12-24
•
Expires: 1985-12-06
Abstract
No abstract record available.
Inventors
- 👤 Barras Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:35
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/78; E02F3/783
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US297408A
Cited
US379441A
Cited
US1215792A
Cited
US1732892A
Cited
US2542474A
Cited
US2830515A
Cited
US2974735A
Cited
US3085832A
Cited
US3261117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-24 | 1972-06-24 | 1972-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-24 | 1976-06-24 | 1976-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-24 | 1980-06-24 | 1980-12-24 | $7700.00 | Window Closed / Lapsed |