US3076140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor test set
Assignee: Individual
•
Filing: 1959-08-27
•
Granted: 1963-01-29
•
Expires: 1979-08-27
Abstract
No abstract record available.
Inventors
- 👤 Robert M Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:42
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/26; G01R31/2601; G01R31/2603
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
IN A TEST SET FOR MEASURING AND DISPLAYING THE CHARACTERISTICS OF DEVICE SUCH AS A TRANSISTOR OR VACUUM TUBE HAVING AT LEAST THREE ELEMENTS, IN COMBINATION, MEANS FOR APPLYING A SAWTOOTH VOLTAGE TO ONE OF THE ELEMENTS AND APPLYING SAID ELEMENTS VOLTAGE TO THE HORIZONTAL INPUT OF AN OSCILLOSCOPE, MEANS FOR APPLYING A STEPPED CURRENT FUNCTION TO A CONTROL ELEMENT OF THE DEVICE AND MEANS FOR SYNCHRONIZING THE APPLICATION OF THE SAID VOLTAGE AND STEPPED CURRENT FUNCTION, SAID MEANS COMPRISING A GANGED ROTARY MECHANICAL SWITCH HAVING GANGED SYNCHRONOUSLY OPERATED ROTARY CONTACTORS CONTROLLING THE APPLICATION OF SAID VOLTAGE AND SAID CURRENT FUNCTION AND MEANS FOR APPLYING A VOLTAGE PROPORTIONAL TO THE CURRENT FLOW THROUGH SAID FIRST ELEMENT TO THE VERTICAL INPUT OF THE OSCILLOSCOPE AND MEANS WITHIN SAID TEST SET PROVIDING SOURCES FOR SAID SAWTOOTH VOLTAGE AND STEPPED CURRENT FUNCTION.
Claim 2
Dependent Claim
139 words
IN A TEST SET FOR MEASURING AND DISPLAYING THE CHARACTERISTICS OF DEVICE SUCH AS A TRANSISTOR OR VACUUM TUBE HAVING AT LEAST THREE ELEMENTS, IN COMBINATION, MEANS FOR APPLYING A SAWTOOTH VOLTAGE TO ONE OF THE ELEMENTS AND APPLYING SAID ELEMENTS VOLTAGE TO THE HORIZONTAL INPUT OF AN OSCILLOSCOPE, MEANS FOR APPLYING A STEPPED CURRENT FUNCTION TO A CONTROL ELEMENT OF THE DEVICE AND MEANS FOR SYNCHRONIZING THE APPLICATION OF THE SAID VOLTAGE AND STEPPED CURRENT FUNCTION, SAID MEANS COMPRISING A GANGED ROTARY MECHANICAL SWITCH HAVING GANGED SYNCHRONOUSLY OPERATED ROTARY CONTACTORS CONTROLLING THE APPLICATION OF SAID VOLTAGE AND SAID CURRENT FUNCTION AND MEANS FOR APPLYING A VOLTAGE PROPORTIONAL TO THE CURRENT FLOW THROUGH SAID FIRST ELEMENT TO THE VERTICAL INPUT OF THE OSCILLOSCOPE AND MEANS WITHIN SAID TEST SET PROVIDING SOURCES FOR SAID SAWTOOTH VOLTAGE AND STEPPED CURRENT FUNCTION.
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) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |