US3021782A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dewatering device and pressure feeder
Assignee: BAUR BROS CO
•
Filing: 1959-03-27
•
Granted: 1962-02-20
•
Expires: 1979-03-27
Abstract
No abstract record available.
Inventors
- 👤 Marvin E Ginaven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:50
CPC Classifications
B; B30; B30B; B30B9/00; B30B9/02; B30B9/12; B30B9/16; B30B9/26; D; D21; D21C; D21C9/00; D21C9/18
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) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |