74246635
Feb 18, 1992
Mar 30, 1993
Active Trademark
chemical products for use in tracing cracks, fissures, defects, and stains in and on surfaces; namely, penetrants, dyes, developers, solvents, and penetrant removers, all of which may be in the form of gases, sprays, aerosol sprays, suspensions, emulsions, powders or solids
Chemicals