Optofil Trademarks

OPTOFIL
wire from base medal (not for electrical purposes)
Cancelled  ·  May 21, 1992  ·  74278192  · 
OPTOFILM
Electrical Components-Namely, Solid State Optical Coupled Relays
Cancelled  ·  April 2, 1979  ·  73209888  · 
optofilm