Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1983-04-21
1985-08-06
Krawczewicz, Stanley T.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
324133, 324 725, G01R 3102
Patent
active
045338647
ABSTRACT:
An easily portable test instrument designed to be plugged into a wall socket such as a socket forming part of a telephone modular jack assembly has a barrel part containing test and alarm circuitry the barrel part connected to a rigid jack by a flexible neck through which leads pass to electrically connect the jack to the test and alarm circuitry.
REFERENCES:
patent: 3369214 (1968-02-01), Krumreich et al.
patent: 3976849 (1976-08-01), Champan
Harvey Jack B.
Krawczewicz Stanley T.
Northern Telecom Limited
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