Valve flap for mouth organs
United States Patent 2504296
US Patent References:
Plastic harmonica
2407312


Inventors:
Hans, Bibus
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Publication Date:
04/18/1950
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Assignee:
Hans, Bibus
Primary Class:
84/377
Other Classes:
84/376R, 84/363, 984/137
International Classes:
G10D7/12; G10D7/00
Foreign References:
AT16822B
DE60118C
DE691598C