US2652642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface leveling apparatus
Assignee: HUBER MANUFACTURING Co
•
Filing: 1948-03-30
•
Granted: 1953-09-22
•
Expires: 1968-03-30
Abstract
No abstract record available.
Inventors
- 👤 Clayton E Gifford
- 👤 Raymond W Keeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:43
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/7622; E02F3/7627
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US222362A
Cited
US1425303A
Cited
US952338A
Cited
US983493A
Cited
US1753150A
Cited
US1913883A
Cited
US2061535A
Cited
US2045426A
Cited
US2063587A
Cited
US2314475A
Cited
US2156190A
Cited
US2281360A
Cited
US2290477A
Cited
US2359121A
Cited
US2383386A
Cited
US2433019A
Cited
US2467111A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-21 | 1957-03-23 | 1957-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-21 | 1961-03-23 | 1961-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-21 | 1965-03-23 | 1965-09-22 | $7700.00 | Window Closed / Lapsed |