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US3471236A
Expired / Lapsed
US
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Prism for optical stroboscope
Assignee: United States Department of the Army
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Filing: 1964-03-30
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Granted: 1969-10-07
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Expires: 1984-03-30
Abstract
No abstract record available.
Inventors
- 👤 Earl T Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:40
CPC Classifications
G; G01; G01P; G01P3/00; G01P3/36; G01P3/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US610918A
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US1945072A
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US2109586A
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US2117635A
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US2506764A
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US2454959A
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US2703743A
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US3073210A
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US3187629A
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US3399592A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |