Title:
Tip for mechanical pencils
United States Patent 1872151


Inventors:
Lindemon, William H.
Application Number:
US53759531A
Publication Date:
08/16/1932
Filing Date:
05/15/1931
Assignee:
SHEAFFER W A PEN CO
Primary Class:
Other Classes:
29/511, 29/516
International Classes:
B43K21/24
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