Patent US3547717A successfully refreshed from Google Patents.
US3547717A
Expired / Lapsed
US
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Radiation resistant semiconductive device
Assignee: Sprague Electric Co
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Filing: 1968-04-29
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Granted: 1970-12-15
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Expires: 1988-04-29
Abstract
No abstract record available.
Inventors
- 👤 Joseph Lindmayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:45
CPC Classifications
B; B60; B60S; B60S1/00; B60S1/02; B60S1/46; H; H10; H10D; H10D30/00; H10D30/01; H10D30/021; H10D99/00; H10P; H10P95/00; Y; Y10; Y10S; Y10S257/00; Y10S257/906; Y10S438/00; Y10S438/91; Y10S438/953
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |