US2922345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for automatically leveling material in the building of roads and the like
Assignee: Individual
•
Filing: 1955-06-06
•
Granted: 1960-01-26
•
Expires: 1975-06-06
Abstract
No abstract record available.
Inventors
- 👤 Alexander G Mentes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:07
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/48; E01C19/4866; E01C19/4873; E01C19/004; E01C19/008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2043413A
Cited
US2125590A
Cited
US2295519A
Cited
US2441532A
Cited
US2491275A
Cited
US2597221A
Cited
US2591502A
Cited
US2636290A
Cited
US2720716A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-25 | 1963-07-27 | 1964-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-25 | 1967-07-27 | 1968-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-25 | 1971-07-27 | 1972-01-26 | $7700.00 | Window Closed / Lapsed |