Title:
Disposable surgical mask
United States Patent 3170461


Inventors:
Watts Jr., Hillary G.
Application Number:
US13876761A
Publication Date:
02/23/1965
Filing Date:
09/18/1961
Assignee:
Watts Jr., Hillary G.
Primary Class:
International Classes:
A41D13/11
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US Patent References:
2751905Anti-bacterial masks1956-06-26
1987922Face mask1935-01-15
1292095N/A1919-01-21
Foreign References:
GB191305104A1913-12-18
GB442725A1936-02-10