Title:
Method and apparatus for controlling the porosity of electrically perforated sheet material
United States Patent 2528158
Inventors:
Menke, Edward W.
Application Number:
US12839349A
Publication Date:
10/31/1950
Filing Date:
11/19/1949
Assignee:
Henry, Hay C.
Primary Class:
Other Classes:
156/253
International Classes:
B26F1/28; G01N15/08
View Patent Images:
US Patent References: