US2696374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shifting jack for longwall coal planing machines
Assignee: Gewerkschaft Eisenhutte Westfalia GmbH
•
Filing: 1950-05-09
•
Granted: 1954-12-07
•
Expires: 1970-05-09
Abstract
No abstract record available.
Inventors
- 👤 Lobbe Armin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:45
CPC Classifications
E; E21; E21F; E21F13/00; E21F13/08; E21F13/086
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1517095A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-06 | 1958-06-07 | 1958-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-06 | 1962-06-07 | 1962-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-06 | 1966-06-07 | 1966-12-07 | $7700.00 | Window Closed / Lapsed |