Patent US3439185A successfully refreshed from Google Patents.
US3439185A
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US
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Logic circuits employing field-effect transistors
Assignee: RCA Corp
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Filing: 1966-01-11
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Granted: 1969-04-15
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Expires: 1986-01-11
Abstract
No abstract record available.
Inventors
- 👤 John James Gibson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:10
CPC Classifications
H; H03; H03K; H03K19/00; H03K19/02; H03K19/173; H03K19/1733; H03K19/1735; H03K19/1736; G; G11; G11C; G11C11/00; G11C11/21; G11C11/34; G11C11/40; G11C11/41; G11C11/412; G11C15/00; G11C15/04; H03K19/08; H03K19/094; H03K19/0944; H03K19/0948; H03K3/00; H03K3/02; H03K3/353; H03K3/356; H03K3/356104
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3134912A
Cited
US3252011A
Cited
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 |