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United States Patent 1710831

Inventors:
Madinger, Gottlieb F.
Publication Date:
04/30/1929
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Assignee:
Madinger, Gottlieb F.
Primary Class:
36/168
Other Classes:
36/76R
International Classes:
A43B13/41; A43B17/02; A43B17/06; A43B13/38; A43B17/00