Patent US1463504A successfully refreshed from Google Patents.
Patent US3222545A successfully refreshed from Google Patents.
US3222545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor multistate circuits
Assignee: AT&T Inc
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Filing: 1962-06-29
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Granted: 1965-12-07
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Expires: 1982-06-29
Abstract
No abstract record available.
Inventors
- 👤 Charles J N Candy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:46
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/313; H03K3/315
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
APPARATUS WHICH COMPRISES A NEGATIVE RESISTANCE DIODE HAVING TWO TERMINALS, A UNIDIRECTIONALLY CONDUCTIVE DIODE HAVING TWO TERMINALS, A TERMINAL OF THE NEGATIVE RESISTANCE DIODE AND A TERMINAL OF THE UNIDIRECTIONALLY CONDUCTIVE DIODE BEING JOINTLY AND DIRECTLY CONNECTED TO A COMMON POINT, THE OTHER TERMINAL OF SAID NEGATIVE RESISTANCE DIODE BEING CONNECTED DIRECTLY TO GROUND, AND STORAGE MEANS INTERCONNECTING SAID OTHER TEMINAL OF SAID NEGATIVE RESISTANCE DIODE DIRECTLY WITH THE OTHER TERMINAL OF SAID UNIDIRECTIONALLY CONDUCTIVE DIODE.
Claim 2
Dependent Claim
76 words
APPARATUS WHICH COMPRISES A NEGATIVE RESISTANCE DIODE HAVING TWO TERMINALS, A UNIDIRECTIONALLY CONDUCTIVE DIODE HAVING TWO TERMINALS, A TERMINAL OF THE NEGATIVE RESISTANCE DIODE AND A TERMINAL OF THE UNIDIRECTIONALLY CONDUCTIVE DIODE BEING JOINTLY AND DIRECTLY CONNECTED TO A COMMON POINT, THE OTHER TERMINAL OF SAID NEGATIVE RESISTANCE DIODE BEING CONNECTED DIRECTLY TO GROUND, AND STORAGE MEANS INTERCONNECTING SAID OTHER TEMINAL OF SAID NEGATIVE RESISTANCE DIODE DIRECTLY WITH THE OTHER TERMINAL OF SAID UNIDIRECTIONALLY CONDUCTIVE DIODE.
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) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |