Vaporizer
United States Patent 2181421

Inventors:
Fahr, George E.
Kerkhof, Arthur C.
Publication Date:
11/28/1939
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Assignee:
Fahr, George E.
Kerkhof, Arthur C.
Primary Class:
128/200.210
Other Classes:
220/278, 239/304, 239/338
International Classes:
A61M11/06