Title:
Mechanical pencil
United States Patent 1892145


Inventors:
Guyot, Walter E.
Application Number:
US46469230A
Publication Date:
12/27/1932
Filing Date:
06/28/1930
Assignee:
PARKER PEN CO
Primary Class:
Other Classes:
401/70, 401/77
International Classes:
B43K21/08
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