US3493932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integrated switching matrix comprising field-effect devices
Assignee: International Business Machines Corp
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Filing: 1966-01-17
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Granted: 1970-02-03
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Expires: 1986-01-17
Abstract
No abstract record available.
Inventors
- 👤 Hwa N Yu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:36
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/687; H03K17/693; H10; H10B; H10B20/00; H10D; H10D84/00; H10D84/01; H10D84/0123; H10D84/0126; H10D84/02; H10D84/03; H10D84/038; H10D99/00; H10W; H10W20/00; H10W20/20
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) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |