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Patent US3475209A successfully refreshed from Google Patents.
US3475209A
Expired / Lapsed
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Single crystal silicon on chrysoberyl
Assignee: Boeing North American Inc
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Filing: 1967-01-05
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Granted: 1969-10-28
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Expires: 1987-01-05
Abstract
No abstract record available.
Inventors
- 👤 Harold M Manasevit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:57
CPC Classifications
C; C30; C30B; C30B23/00; H; H10; H10P; H10P14/00; H10P14/20; H10P14/24; H10P14/29; H10P14/2901; H10P14/2921; H10P14/34; H10P14/3402; H10P14/3404; H10P14/3411; H10P14/3466; Y; Y10; Y10S; Y10S148/00; Y10S148/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3312572A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |