73124445
Apr 27, 1977
Jul 17, 1979
ELECTRICAL FAULT INDICATOR APPARATUS FOR USE IN PROCESS MONITORING AND FAULT LOCATION IN VARIOUS EQUIPMENT AND PROCESS LINES AND THE LIKE, INCLUDING INDUCTION TUBE WELDING EQUIPMENT, AUTOMOTIVE TRANSFER LINES, BOTTLING AND PACKING PROCESS LINES, AND COMPLEX MACHINE CONTROL SYSTEMS OPERATED BY ELECTRICAL INTERLOCKS AND CONTROLS
Electrical and Scientific Apparatus