Air blower and distributer
United States Patent 1339510

Inventors:
Hoffman, William A.
Publication Date:
05/11/1920
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Assignee:
Hoffman, William A.
Primary Class:
34/191
Other Classes:
165/124, 126/204, 392/380, 137/563, 62/293, 137/597, 62/259.100, 392/473, 165/48.100, 34/99
International Classes:
A61H33/08; A61H3/02; A61H33/06; A61H3/00