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US3487223A
Expired / Lapsed
US
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Multiple internal reflection structure in a silicon detector which is obtained by sandblasting
Assignee: United States Department of the Air Force
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Filing: 1968-07-10
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Granted: 1969-12-30
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Expires: 1988-07-10
Abstract
No abstract record available.
Inventors
- 👤 Albert E St John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:12
CPC Classifications
H; H10; H10P; H10P52/00; H10F; H10F77/00; H10F77/40; H10P95/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2768265A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |