Patent US3372585A successfully refreshed from Google Patents.
US3372585A
Expired / Lapsed
US
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Device for recording current velocity and direction in bodies of water
Assignee: SHALE J NISKIN
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Filing: 1966-02-17
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Granted: 1968-03-12
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Expires: 1986-02-17
Abstract
No abstract record available.
Inventors
- 👤 Shale J Niskin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:48
CPC Classifications
G; G01; G01P; G01P5/00; G01P5/02; G01P13/00; G01P13/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1773808A
Cited
US2941306A
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US2864834A
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US3094928A
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US3203236A
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US3293676A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |