Apparatus for developing electrostatic images
United States Patent 3246629

Inventors:
Shelffo, Loren E.
Harmon, John A.
Publication Date:
04/19/1966
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Assignee:
Addressograph, Multigraph
Primary Class:
399/276
Other Classes:
209/219, 492/8
International Classes:
G03G15/09
US Patent References:
3081737Xerographic apparatus for applying ferromagnetic powder
3088386Electrophotographic photocopy machine
Foreign References:
GB330323A