Title:
Disposable surgical mask
United States Patent 3170461
Inventors:
Watts Jr., Hillary G.
Publication Date:
02/23/1965
Export Citation:
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Assignee:
Watts Jr., Hillary G.
Primary Class:
128/863
International Classes:
A41D13/11; A41D13/05
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US Patent References:
2751905Anti-bacterial masks
1987922Face mask
1292095N/A
Foreign References:
GB191305104A
GB442725A