Title:
Filters
United States Patent 3079926
Inventors:
Litchfield, Harry R.
Schneider, Jacob J.
Publication Date:
03/05/1963
Export Citation:
Assignee:
Harry, Litchfield R.
Jacob, Schneider J.
Primary Class:
Other Classes:
55/522, 55/528, 96/131, 131/331, 131/344
International Classes:
A24D3/04; A24D3/00
View Patent Images:
US Patent References:
Foreign References:
FR1083502A
GB440316A
GB755479A
CH329353A