73179536
Jul 24, 1978
Sep 2, 1980
ELECTRICAL ENCLOSURES AND ASSEMBLIES-NAMELY, JUNCTION BOXES, PULL BOXES, CUTOUT BOXES, INDUSTRIAL CONTROL PANELS, METERING TRANSFORMER CABINETS, PANELBOARDS, SWITCHBOARDS, ENCLOSED SWITCHES, WIREWAYS, AUXILIARY GUTTERS, AND FITTINGS
Electrical and Scientific Apparatus