Oxychro Trademarks

OXYCHRO
CHROMATE CONVERSION COATING MATERIALS FOR APPLICATION TO METALLIC SUBSTRATES
Expired  ·  February 20, 1973  ·  72449322  · 
OXYCHROME
hydrated chromium oxide precipitated on carbon particles for industrial use
Cancelled  ·  July 18, 1991  ·  74186343  ·