Title:
Magazine pencil with rotary lead propelling means
United States Patent 2504420


Inventors:
Hull, Philip C.
Gilman, George W.
Application Number:
US73827647A
Publication Date:
04/18/1950
Filing Date:
03/31/1947
Assignee:
PARKER PEN CO
Primary Class:
Other Classes:
226/168, 401/72, 401/80, 401/85, 401/103, 401/116
International Classes:
B43K21/14
View Patent Images:
US Patent References:
2116136Pencil1938-05-03
1864038Mechanical pencil1932-06-21
1621990Automatic pencil1927-03-22