Title:
Electrostatic printing method and apparatus
United States Patent 2558900
Inventors:
Hooper, William J.
Publication Date:
07/03/1951
Assignee:
William, Huebner C.
Other Classes:
347/55, 250/325, 101/489
International Classes:
B41F17/00; B41M1/42; B41M1/00