US2963801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dredge ladder
Assignee: Ellicott Machine Corp
•
Filing: 1956-12-03
•
Granted: 1960-12-13
•
Expires: 1976-12-03
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles E Ellicott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:42
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/88; E02F3/90; E02F3/905; E02F3/92; E02F3/9212; E02F3/9225; E02F3/9231; Y; Y10; Y10S; Y10S37/00; Y10S37/902
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |