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Leadholder

United States Patent 3,450,482 "Pencil Lead Holder with Fixed Length Feed" 1967

date of application
date granted
inventor
assignee
patent holder country
1967 June 12
1969 June 17
Virgil D. Dorstewitz
Tru Point Products Inc.
United States
patent employed on
Trupoint Automatic


 
 
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