US3439236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulated-gate field-effect transistor with critical bulk characteristics for use as an oscillator component
Assignee: RCA Corp
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Filing: 1965-12-09
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Granted: 1969-04-15
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Expires: 1985-12-09
Abstract
No abstract record available.
Inventors
- 👤 Adolph Blicher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:27
CPC Classifications
H; H03; H03B; H03B9/00; H03B9/12; H10; H10D; H10D30/00; H10D30/60; H10D30/611; H10D30/637; H10D64/00; H10D64/20; H10D64/27; H10D64/311; H10D64/411; H10D64/511; H10D64/514; H10D64/516; H10N; H10N80/00
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) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |