United States Patent 2655259
Inventors:
Francis, Davoren William
Publication Date:
10/13/1953
Assignee:
Francis, Davoren William
Other Classes:
220/324, 83/648, 30/244, 30/124, 241/DIG.027, 206/38, 83/607, 225/103, 206/534.200
International Classes:
A61J7/00