Assignee
SCHUMACHER ERNST E
2 granted patents·23 citations·filing 1974–1976
Top patents by PatentIndex Score
2 records- 0166US3934081AMethod and apparatus for improving photomechanical reproduction by contrast decreaseSCHUMACHER ERNST E·Filed 1974·Granted Jan 20, 1976·18 cites·7 claims
- 0233US4062688ASet of basic printing inks for producing color tones by printing methodsSCHUMACHER ERNST E·Filed 1976·Granted Dec 13, 1977·5 cites·6 claims
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