71690122
Jun 24, 1955
Aug 21, 1956
BLASTING ACCESSORIES AND SUPPLIES-NAMELY, BLASTING CAP CRIMPERS, LEAD WIRE, CONNECTING WIRE, BLASTING CAPS, BOOSTERS, BLASTING MACHINES, GALVANOMETERS AND RHEOSTATS FOR TESTING BLASTING CIRCUITS AND MACHINES, AND THE LIKE
Electrical and Scientific Apparatus