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US3377805A
Expired / Lapsed
US
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Device to assist fish to travel past obstacles in waterways
Assignee: JOSEPH WILLIAM WARNER
•
Filing: 1965-09-21
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Granted: 1968-04-16
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Expires: 1985-09-21
Abstract
No abstract record available.
Inventors
- 👤 Warner Joseph William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:07
CPC Classifications
E; E02; E02B; E02B8/00; E02B8/08; E02B8/085; Y; Y02; Y02A; Y02A40/00; Y02A40/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1519450A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-16 | 1971-10-16 | 1972-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-16 | 1975-10-16 | 1976-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-16 | 1979-10-16 | 1980-04-16 | $7700.00 | Window Closed / Lapsed |