Tuesday 29th March 1910
C N Teetor as granted a patent for his “Oil-Regulating Piston Rings”, leading to his founding of the Perfect Circle Company.
An Everyday Journey Through Motoring History, Facts & Trivia
This Day In Automotive History
C N Teetor as granted a patent for his “Oil-Regulating Piston Rings”, leading to his founding of the Perfect Circle Company.
I We have no wish to abuse copyright regulations and we apologise unreservedly if this occurs. If you own any of the material published please get in touch.