US3395720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetohydrodynamic-vortex stream transducer
Assignee: United States Department of the Navy
•
Filing: 1965-02-24
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Granted: 1968-08-06
•
Expires: 1985-02-24
Abstract
No abstract record available.
Inventors
- 👤 John D Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:54
CPC Classifications
H; H02; H02K; H02K44/00; H02K44/08; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/2082; Y10T137/2087; Y10T137/218; Y10T137/2191
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2652778A
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US2763125A
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US2997013A
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US3072807A
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US3138919A
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US3176520A
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US3071154A
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US3182675A
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US3257949A
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US3270672A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-06 | 1972-02-05 | 1972-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-06 | 1976-02-05 | 1976-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-06 | 1980-02-05 | 1980-08-06 | $7700.00 | Window Closed / Lapsed |