Inventor
PANKEN IRVING
US5 patents
Patents
5 patentsUS4525214AJun 25, 1985
Crayon adapted for development of latent images
MAZER CORP40 citations88
US3979550ASep 7, 1976
Pre-printed latent image spirit duplicating masters
MAZER CORP21 citations78
US4005237AJan 25, 1977
Non-bleed pre-printed spirit duplicating masters
MAZER CORP14 citations69
US3962526AJun 8, 1976
Tissueless pre-printed spirit duplicating masters
MAZER CORP10 citations69
US4257329AMar 24, 1981
Fluidless masters
MAZER CORP0 citations43