DUPLICATING PROCESS EMPLOYING MAGNETIC DEVELOPER MATERIAL
United States Patent 3526191
Inventors:
Silverberg, Morton
Tubinis, Matthew P.
Publication Date:
09/01/1970
Other Classes:
346/74.200, 347/112, 101/450.100, 101/465, 101/DIG.037, 101/389.100, 399/308, 118/638
International Classes:
G03G19/00; G03G19/00