CENTRALAB
ELECTRICAL AND ELECTRONIC APPARATUS-NAMELY, FIXED AND VARIABLE RESISTORS, FIXED AND VARIABLE CAPACITORS, SWITCHES, AND SWITCH PARTS; CERAMIC BODIES, AND COMPLETE AND PARTIAL CIRCUIT ASSEMBLIES IN WHICH ALL OR PART OF THE WIRING AND ELECTRICAL COMPONENTS ARE SCREENED, SPRAYED OR PAINTED ON AN INSULATING BASE
Expired · July 26, 1947 · 71529635 ·