Mark Identification

KEYSPARK

Serial Number

72148979

Filing Date

Jul 13, 1962

Registration Date

Apr 30, 1963

Trademark by

KEYSTONE CARBON CO.

Classification Information

MATERIAL IN THE FORM OF SLUGS OR BLOCKS TO BE USED IN THE PRODUCTION OF ELECTRODES FOR USE IN CUTTING VARIOUS MATERIALS BY THE ELECTRICAL DISCHARGE METHOD

Housewares and Glass