Patent US3176154A successfully refreshed from Google Patents.
US3176154A
Expired / Lapsed
US
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Three state memory device
Assignee: Individual
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Filing: 1961-09-18
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Granted: 1965-03-30
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Expires: 1981-09-18
Abstract
No abstract record available.
Inventors
- 👤 Forrest O Salter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:02
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/313; H03K3/315; G; G11; G11C; G11C11/00; G11C11/21; G11C11/34; G11C11/36; G11C11/38; G11C11/56; G11C2211/00; G11C2211/56; G11C2211/561; G11C2211/5614
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A THREE STATE MEMORY DEVICE COMPRISING A TUNNEL DIODE, AN INDUCTANCE IN SERIES CONNECTION WITH SAID DIODE, AN INPUT INSERTED ACROSS SAID SERIES CONNECTED DIODE AND INDUCTANCE, AN OUTPUT TAKEN ACROSS SAID SERIES CONNECTED DIODE AND INDUCTANCE, SAID INDUCTANCE HAVING A VALUE TO PERMIT AND DIODE TO OSCILLATE IN THE NEGATIVE RESISTANCE PORTION OF THE CHARACTERISTIC CURVE THEREOF WHEREBY THE
Claim 2
Dependent Claim
60 words
A THREE STATE MEMORY DEVICE COMPRISING A TUNNEL DIODE, AN INDUCTANCE IN SERIES CONNECTION WITH SAID DIODE, AN INPUT INSERTED ACROSS SAID SERIES CONNECTED DIODE AND INDUCTANCE, AN OUTPUT TAKEN ACROSS SAID SERIES CONNECTED DIODE AND INDUCTANCE, SAID INDUCTANCE HAVING A VALUE TO PERMIT AND DIODE TO OSCILLATE IN THE NEGATIVE RESISTANCE PORTION OF THE CHARACTERISTIC CURVE THEREOF WHEREBY 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) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |