Patent US3383682A successfully refreshed from Google Patents.
US3383682A
Expired / Lapsed
US
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Radar glasses for the blind
Assignee: University of Utah
•
Filing: 1966-10-24
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Granted: 1968-05-14
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Expires: 1986-10-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Kenneth Dean Stephens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:37
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/88; G09; G09B; G09B21/00; G09B21/001; G09B21/007; Y; Y10; Y10S; Y10S367/00; Y10S367/91
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2533299A
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US2721316A
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US3260991A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-14 | 1971-11-13 | 1972-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-14 | 1975-11-13 | 1976-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-14 | 1979-11-13 | 1980-05-14 | $7700.00 | Window Closed / Lapsed |