Pferrico Trademarks

PFERRICO
Cobalt Doped Iron Oxide for Use in the Manufacture of Magnetic Recording Tapes
Cancelled  ·  June 23, 1980  ·  73267347  · 
PFERRICO
Cobalt Doped Iron Oxide for Magnetic Recording
Cancelled  ·  December 7, 1979  ·  73241902  ·