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1 result for "Perfect Circle Piston Ring" in Creator.

Found in catalogs (2)

• Educational Screen 1932 — page 89

  …Boost Piston Ring Sales An increase of --^ per cent in 1931 business over that of 1930 is reported by the Perfect Circle Com- pany…

• Educational Screen 1930-1931 — page 386

  …three-reel picture dealing with the manu- facture of piston rings by the Perfect Circle Company, of Hagerstown, Ind. Factory scenes have been pho…