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British Patent 906,930
“Improvements in or relating to Pencil Sharpeners”, 1959–1962

date of application
date granted
inventor
assignee
patent holder country
1959 May 11
1962 September 26
John Roman
Mermaid Engineering Co.
England
The Patent Office London seal
patent employed on
Eagle Turquoise 10 leadholder (pushbutton)