Title:
Stencil screen and method of making the same
United States Patent 2209499
Inventors:
Wulf, Charles A.
Publication Date:
07/30/1940
Assignee:
Wulf, Charles A.
Other Classes:
101/128.21, 430/6, 430/308, 430/320
International Classes:
G03F7/12; G03F7/12