US3428845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-emitting semiconductor having relatively heavy outer layers for heat-sinking
Assignee: RCA Corp
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Filing: 1966-11-21
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Granted: 1969-02-18
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Expires: 1986-11-21
Abstract
No abstract record available.
Inventors
- 👤 Herbert Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:07
CPC Classifications
H; H10; H10H; H10H20/00; H10H20/80; H10H20/85; H10H20/858; H10H20/8585; H10D; H10D99/00; H10W; H10W40/00; H10W40/10; H10W72/00; H10W72/20; H10H20/81; H10H20/819
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) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |