Patent US3473067A successfully refreshed from Google Patents.
US3473067A
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US
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Hemispherical luminescence diode producing a real image of the p-n junction
Assignee: Siemens AG
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Filing: 1967-03-21
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Granted: 1969-10-14
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Expires: 1987-03-21
Abstract
No abstract record available.
Inventors
- 👤 Gerhard Rittmayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:28
CPC Classifications
H; H10; H10H; H10H20/00; H10H20/80; H10H20/81; H10H20/819; G; G02; G02B; G02B3/00; H04; H04B; H04B10/00; H04B10/50
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) | 1972-10-13 | 1973-04-14 | 1973-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-13 | 1977-04-14 | 1977-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-13 | 1981-04-14 | 1981-10-14 | $7700.00 | Window Closed / Lapsed |