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Title: Two "no oil metal" split piston rings for 8" diam [Go to resource]
Description: Two "no oil metal" split piston rings for 8" diam. cylinder. Loftus Perkins's patent A.D. 1872 No.3845 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Identifier: 1926-904 Go to resource More Like this...
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