Foul air exhauster
United States Patent 1861501

Inventors:
Lowther, Jesse P.
Publication Date:
06/07/1932
View Patent Images:
Download PDF 1861501 pdf       PDF help
Export Citation:
Click for automatic bibliography generation
Assignee:
Lowther, Jesse P.
Primary Class:
4/213
International Classes:
E03D9/052; E03D9/04