US3152264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Logic circuits with inversion
Assignee: International Business Machines Corp
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Filing: 1960-11-14
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Granted: 1964-10-06
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Expires: 1980-11-14
Abstract
No abstract record available.
Inventors
- 👤 Jr Harold L Ergott
- 👤 Stathis G Linardos
- 👤 Richard T O'connell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:30
CPC Classifications
H; H03; H03K; H03K19/00; H03K19/02; H03K19/08; H03K19/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
73 words
INVERSE FUNCTION PRODUCING APPARATUS, COMPRISING: (A) FIRST AND SECOND BISTABLE STAGES, EACH STAGE INCLUDING A QUANTUM MECHANICAL TUNNELING DEVICE HAVING AN ANODE AND A CATHODE; (B) SIGNAL INPUT MEANS COUPLED TO THE ANODE OF THE FIRST STAGE DIODE AND SHIFTABLE BETWEEN INVERSELY RELATED SIGNAL CONDITIONS; (C) CYCLICALLY OPERATING CLOCK PULSE INPUT MEANS COUPLED TO THE ANODES OF THE TWO STAGES AND EFFECTIVE TO SUPPLY A SERIES OF CLOCK PULSES TO EACH STAGE, THE
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) | 1967-10-06 | 1968-04-06 | 1968-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-06 | 1972-04-06 | 1972-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-06 | 1976-04-06 | 1976-10-06 | $7700.00 | Window Closed / Lapsed |