Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Nonquantitative
Patent
1990-02-12
1993-02-09
Harvey, Jack B.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Nonquantitative
324508, 324556, 340654, 362800, G01R 19155
Patent
active
051855704
ABSTRACT:
A telecommunication signal detector consists of a light emitting diode attached to a standard connector plug which maybe temporarily connected to the telecommunications equipment to be tested. The light emitting diode illuminates to indicate the presence of a signal. In this manner, the telecommunications equipment maybe tested for signal presence by a small and inexpensive device without interruption of operation.
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1987 Fordham Radio Catalog, p. 46.
Harvey Jack B.
Katz Helmuth J.
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