Patent US2337818A successfully refreshed from Google Patents.
US2337818A
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US
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Dredge
Assignee: Individual
•
Filing: 1942-01-29
•
Granted: 1943-12-28
•
Expires: 1962-01-29
Abstract
No abstract record available.
Inventors
- 👤 James H Hill
- 👤 Howard F Craven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:07
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) | 1946-12-27 | 1947-06-28 | 1947-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-12-27 | 1951-06-28 | 1951-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-12-27 | 1955-06-28 | 1955-12-28 | $7700.00 | Window Closed / Lapsed |