US2850814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic mechanism for dredge
Assignee: Ellicott Machine Corp
•
Filing: 1953-09-09
•
Granted: 1958-09-09
•
Expires: 1973-09-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles E Ellicott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:30
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/88; E02F3/90; E02F3/905; E02F9/00; E02F9/06; E02F9/062; Y; Y10; Y10S; Y10S37/00; Y10S37/902
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US358686A
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US428141A
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US484763A
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US879345A
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US1254357A
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US1493752A
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US1882079A
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US1915331A
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US2260293A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |