US3524986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor light gating of light activated semiconductor power control circuits
Assignee: General Electric Co
•
Filing: 1967-02-06
•
Granted: 1970-08-18
•
Expires: 1987-02-06
Abstract
No abstract record available.
Inventors
- 👤 John D Harnden Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:19
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/78; H03K17/795; H03K17/7955; H03K17/79; H03K3/00; H03K3/02; H03K3/35; H03K3/352; H03K3/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2081839A
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US3304431A
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US3413480A
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US3346811A
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US3333106A
Cited
US3355600A
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US3386027A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-17 | 1974-02-16 | 1974-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-17 | 1978-02-16 | 1978-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-17 | 1982-02-16 | 1982-08-18 | $7700.00 | Window Closed / Lapsed |