Direct thermographic materials with phenolic reducing agents

Record receiver having plural interactive leaves or a colorless – Having a colorless color-former – developer therefor – or... – Heavy metal reactant

Reexamination Certificate


  [ 0.00 ] – not rated yet Voters 0   Comments 0

Please leave your Comment & Rating

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.