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Manufacture of fans
United States Patent 1377300
Inventors:
Withington, Philip H.
Publication Date:
05/10/1921
View Patent Images:
Download PDF 1377300
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Assignee:
SPARKS WITHINGTON CO
Primary Class:
29/889.300
Other Classes:
126/214R
International Classes:
B21D53/78
;
B21D53/00