Ventilated toilet bowl
United States Patent 2122687

Inventors:
William, Herrmann
Publication Date:
07/05/1938
View Patent Images:
Download PDF 2122687 pdf       PDF help
Export Citation:
Click for automatic bibliography generation
Assignee:
William, Herrmann
Primary Class:
4/213
Other Classes:
200/85R
International Classes:
E03D9/052; E03D9/04