Title:
Mechanical pencil
United States Patent 1864038


Inventors:
Pierre, Barberon
Application Number:
US11777026A
Publication Date:
06/21/1932
Filing Date:
06/22/1926
Assignee:
PENCIL MECHANISM CORP
Primary Class:
Other Classes:
401/65, 401/66, 401/72, 401/85
International Classes:
B43K21/14
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