US3355729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Potential difference detecting arrangements
Assignee: English Electric Co Ltd
•
Filing: 1964-10-19
•
Granted: 1967-11-28
•
Expires: 1984-10-19
Abstract
No abstract record available.
Inventors
- 👤 Dayson Ronald Cyril
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:27
CPC Classifications
G; G01; G01R; G01R19/00; G01R19/10; G01N; G01N33/00; G01N33/0004; G01N33/0009; G01N33/0062; G01N33/0063; G01R17/00; G01R17/10; G01R17/16; G01R19/165; G01R19/16566; G01R19/16576
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A POTENTIAL DIFFERENCE DETECTING ARRANGEMENT FOR DETECTING THE PRESENCE, BETWEEN FIRST AND SECOND TERMINALS, OF A POTENTIAL DIFFERENCE OF AT LEAST A PREDETERMINED MAGNITUDE REGARDLESS OF POLARITY, COMPRISING: FIRST AND SECOND TRANSISTORS OF OPPOSITE CONDUCTIVITY TYPES, EACH HAVING A BASE ELECTRODE, AN EMITTER ELECTRODE, AND A COLLECTOR ELECTRODE, CORRESPONDING ELECTRODE, AND A COLLECTOR ELECING CONNECTED DIRECTLY TOGETHER; A SERIES CIRCUIT CONNECTED BETWEEN SAID TERMINALS AND INCLUDING CONNECTION MEANS CONNECTING THE EMITTER ELECTRODES OF THE TRANSISTORS TO THE FIRST TERMINAL AND THE COLLECTOR ELECTRODES OF THE TRANSISTORS TO THE SECOND TERMINAL; INDICATOR MEANS INCLUDED IN SAID CONNECTION MEANS; AND BASE CIRCUIT MEANS FOR CONNECTING THE BASES OF THE TRANSISTORS TO A POINT IN SAID SERIES CIRCUIT BETWEEN THE COLLECTORS OF THE TRANSISTORS AND SAID SECOND TERMINAL.
Claim 2
Dependent Claim
125 words
A POTENTIAL DIFFERENCE DETECTING ARRANGEMENT FOR DETECTING THE PRESENCE, BETWEEN FIRST AND SECOND TERMINALS, OF A POTENTIAL DIFFERENCE OF AT LEAST A PREDETERMINED MAGNITUDE REGARDLESS OF POLARITY, COMPRISING: FIRST AND SECOND TRANSISTORS OF OPPOSITE CONDUCTIVITY TYPES, EACH HAVING A BASE ELECTRODE, AN EMITTER ELECTRODE, AND A COLLECTOR ELECTRODE, CORRESPONDING ELECTRODE, AND A COLLECTOR ELECING CONNECTED DIRECTLY TOGETHER; A SERIES CIRCUIT CONNECTED BETWEEN SAID TERMINALS AND INCLUDING CONNECTION MEANS CONNECTING THE EMITTER ELECTRODES OF THE TRANSISTORS TO THE FIRST TERMINAL AND THE COLLECTOR ELECTRODES OF THE TRANSISTORS TO THE SECOND TERMINAL; INDICATOR MEANS INCLUDED IN SAID CONNECTION MEANS; AND BASE CIRCUIT MEANS FOR CONNECTING THE BASES OF THE TRANSISTORS TO A POINT IN SAID SERIES CIRCUIT BETWEEN THE COLLECTORS OF THE TRANSISTORS AND SAID SECOND TERMINAL.
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) | 1970-11-27 | 1971-05-29 | 1971-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-27 | 1975-05-29 | 1975-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-27 | 1979-05-29 | 1979-11-28 | $7700.00 | Window Closed / Lapsed |