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Copyholder
United States Patent 2194019
Inventors:
Hartsel, Gladys S.
Publication Date:
03/19/1940
View Patent Images:
Download PDF 2194019
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Assignee:
Hartsel, Gladys S.
Primary Class:
248/451
Other Classes:
D19/91, 248/461
International Classes:
B41J29/15