US3493853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of determining logic circuit stability by matching transmission line reactive impedence to circuit reactive impedance and detecting circuit oscillations
Assignee: International Business Machines Corp
•
Filing: 1968-07-11
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Granted: 1970-02-03
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Expires: 1988-07-11
Abstract
No abstract record available.
Inventors
- 👤 Paul D Bellamy
- 👤 Donald P Repchick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:02
CPC Classifications
G; G01; G01R; G01R27/00; G01R27/28; G01R27/30; G01R31/00; G01R31/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2932789A
Cited
US3283180A
Cited
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 |