US1690239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plow and jet-elevator dredge
Assignee: Individual
•
Filing: 1926-04-12
•
Granted: 1928-11-06
•
Expires: 1946-04-12
Abstract
No abstract record available.
Inventors
- 👤 Nicol John Malcolm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:35
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/88; E02F3/8833; E02F3/8841
Claims Analysis
Total Claims: 0
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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) | 1931-11-06 | 1932-05-07 | 1932-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-11-06 | 1936-05-07 | 1936-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-11-06 | 1940-05-07 | 1940-11-06 | $7700.00 | Window Closed / Lapsed |