Patent US2997798A successfully refreshed from Google Patents.
US2997798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jolter adjunct for scraper-loader units
Assignee: Individual
•
Filing: 1958-10-27
•
Granted: 1961-08-29
•
Expires: 1978-10-27
Abstract
No abstract record available.
Inventors
- 👤 Joseph P Ruth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:03
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/64; E02F3/65; E02F3/6454; E02F3/652
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE527897C
Cited
US1858412A
Cited
US2120193A
Cited
US2195982A
Cited
US2674815A
Cited
US2777527A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |