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United States Patent 3,094,102 “Lead Holder or the Like” 1959–1963

date of application
date granted
inventor
assignee
patent holder country
1959 July 30 (1959 January 31, Germany)
1963 June 18
Josef M. Schwarzäugl
A.W. Faber-Castell
Germany
patent employed on
Faber-Castell 9603