Title:
Electrolytic electrocopying apparatus
United States Patent 3011963


Inventors:
Johnson, Edgar G.
Neher, Byron W.
Application Number:
US68623757A
Publication Date:
12/05/1961
Filing Date:
09/25/1957
Assignee:
MINNESOTA MINING & MFG
Primary Class:
Other Classes:
101/DIG.29, 101/DIG.37, 204/242, 347/137, 347/139, 347/163, 399/142
International Classes:
C25D5/02; G03G9/06; G03G17/02
View Patent Images:
Foreign References:
GB464112A1937-04-12
FR894125A1944-12-14
DE151971C