US2912131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulically operated machines
Assignee: Demag Baggerfabrik GmbH
•
Filing: 1957-10-01
•
Granted: 1959-11-10
•
Expires: 1977-10-01
Abstract
No abstract record available.
Inventors
- 👤 Jung Bernhard
- 👤 Flach Wilhelm
- 👤 Kratz Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:59
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/16; F15B11/17; E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/36; E02F3/42; F15B2211/00; F15B2211/20; F15B2211/205; F15B2211/20576; F15B2211/30; F15B2211/305; F15B2211/3056; F15B2211/30585; F15B2211/3059; F15B2211/30595; F15B2211/31; F15B2211/3105; F15B2211/3111; F15B2211/70; F15B2211/71; F15B2211/7142; F15B2211/78; F15B2211/782
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |