Patent US3839369A successfully refreshed from Google Patents.
Patent US2686380A successfully refreshed from Google Patents.
US2686380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fan type dredge
Assignee: Individual
•
Filing: 1950-10-23
•
Granted: 1954-08-17
•
Expires: 1970-10-23
Abstract
No abstract record available.
Inventors
- 👤 Seppala Mikko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:47
CPC Classifications
A; A01; A01K; A01K80/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US255561A
Cited
US379422A
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US589047A
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GB170916A
Cited
GB174250A
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US1449910A
Cited
GB249028A
Cited
US1842634A
Cited
AU1912229A
Cited
US1867281A
Cited
GB405405A
Cited
US2081146A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-16 | 1958-02-15 | 1958-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-16 | 1962-02-15 | 1962-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-16 | 1966-02-15 | 1966-08-17 | $7700.00 | Window Closed / Lapsed |