Title:
Ear stopper
United States Patent 2246737
Inventors:
Knudsen, Vern O.
Publication Date:
06/24/1941
Export Citation:
Click for automatic bibliography generation
Assignee:
Knudsen, Vern O.
Primary Class:
128/865
Other Classes:
181/135, 381/151, D24/194
International Classes:
A61F11/08; A61F11/00
View Patent Images:
Download PDF 2246737        PDF help