US3431433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital storage devices using field effect transistor bistable circuits
Assignee: Individual
•
Filing: 1965-05-28
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Granted: 1969-03-04
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Expires: 1985-05-28
Abstract
No abstract record available.
Inventors
- 👤 Robert George Ball
- 👤 Gerald Horace Perry
- 👤 John Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:39
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/353; H03K3/356; H03K3/356104; G; G11; G11C; G11C11/00; G11C11/21; G11C11/34; G11C11/40; G11C11/401; G11C11/402; G11C11/4023; G11C11/4063; G11C11/407; G11C11/409; G11C11/4096; G11C11/41; G11C11/412; G11C11/413; G11C11/417; G11C19/00; G11C19/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
202 words
A DIGITAL STORAGE DEVICE COMPRISING A FIRST BISTABLE CIRCUIT AND A SECOND BISTABLE CIRCUIT EACH COMPRISING A FIRST COMPLEMENTARY PAIR OF FIELD EFFECT TRANSISTORS WHOSE CHANNELS ARE CONNECTED IN SERIES BETWEEN TWO TERMINALS AND WHOSE GATES ARE CONNECTED TOGETHER, A SECOND COMPLEMENTARY PAIR OF FIELD EFFECT TRANSISTORS WHOSE CHANNELS ARE CONNECTED IN SERIES BETWEEN TWO TERMINALS AND WHOSE GATES ARE CONNECTED TOGETHER, A CONNECTION BETWEEN THE COMMON SERIES CONNECTION BETWEEN SAID CHANNELS OF SAID FIRST COMPLEMENTARY PAIR AND SAID GATES OF SECOND COMPLEMENTARY PAIR, A CONNECTION BETWEEN THE COMMON SERIES CONNECTION BETWEEN SAID CHAINNELS OF SAID SECOND COMPLEMENTARY PAIR AND SAID GATES OF SAID FIRST COMPLIMENTARY PAIR, SUPPLY VOLTAGE TERMINALS, AND A CONNECTION BETWEEN SAID TERMINALS AND SAID SUPPLY VOLTAGE TERMINALS, MEANS FOR CONNECTING SAID COMMON SERIES CONNECTION BETWEEN SAID CHANNELS OF SAID SECOND COMPLEMENTARY PAIR OF SAID FIRST BISTABLE CIRCUIT TO SAID GATES OF SAID FIRST COMPLEMENTARY PAIR OF SAID SECOND BISTABLE CIRCUIT, AND MEANS FOR BREAKING ONE OF SAID CONNECTIONS IN SAID SECOND BISTABLE CIRCUIT AT A TIME WHEN SAID COMMON SERIES CONNECTION BETWEEN SAID CHANNELS OF SAID COMPLEMENTARY PAIR OF SAID FIRST BISTABLE CIRCUIT IS CONNECTED TO SAID GATES OF SAID FIRST COMPLEMENTARY PAIR OF SAID SECOND BISTABLE CIRCUIT.
Claim 2
Dependent Claim
202 words
A DIGITAL STORAGE DEVICE COMPRISING A FIRST BISTABLE CIRCUIT AND A SECOND BISTABLE CIRCUIT EACH COMPRISING A FIRST COMPLEMENTARY PAIR OF FIELD EFFECT TRANSISTORS WHOSE CHANNELS ARE CONNECTED IN SERIES BETWEEN TWO TERMINALS AND WHOSE GATES ARE CONNECTED TOGETHER, A SECOND COMPLEMENTARY PAIR OF FIELD EFFECT TRANSISTORS WHOSE CHANNELS ARE CONNECTED IN SERIES BETWEEN TWO TERMINALS AND WHOSE GATES ARE CONNECTED TOGETHER, A CONNECTION BETWEEN THE COMMON SERIES CONNECTION BETWEEN SAID CHANNELS OF SAID FIRST COMPLEMENTARY PAIR AND SAID GATES OF SECOND COMPLEMENTARY PAIR, A CONNECTION BETWEEN THE COMMON SERIES CONNECTION BETWEEN SAID CHAINNELS OF SAID SECOND COMPLEMENTARY PAIR AND SAID GATES OF SAID FIRST COMPLIMENTARY PAIR, SUPPLY VOLTAGE TERMINALS, AND A CONNECTION BETWEEN SAID TERMINALS AND SAID SUPPLY VOLTAGE TERMINALS, MEANS FOR CONNECTING SAID COMMON SERIES CONNECTION BETWEEN SAID CHANNELS OF SAID SECOND COMPLEMENTARY PAIR OF SAID FIRST BISTABLE CIRCUIT TO SAID GATES OF SAID FIRST COMPLEMENTARY PAIR OF SAID SECOND BISTABLE CIRCUIT, AND MEANS FOR BREAKING ONE OF SAID CONNECTIONS IN SAID SECOND BISTABLE CIRCUIT AT A TIME WHEN SAID COMMON SERIES CONNECTION BETWEEN SAID CHANNELS OF SAID COMPLEMENTARY PAIR OF SAID FIRST BISTABLE CIRCUIT IS CONNECTED TO SAID GATES OF SAID FIRST COMPLEMENTARY PAIR OF SAID SECOND BISTABLE CIRCUIT.
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) | 1972-03-03 | 1972-09-02 | 1973-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-03 | 1976-09-02 | 1977-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-03 | 1980-09-02 | 1981-03-04 | $7700.00 | Window Closed / Lapsed |