18 Nrientific AN IMPROVED SAFETY VALVE AND MUFFLER. AN IMPROVED BALANCED SLIDE VALVE. MoDONALD'S BALANCED SLIDE VALVE. A New Use for Bamboo. Calomel in Hemorrhoids. A SCRAPER FOR SAWMILL CARRIAGES. CRONICHITE'S SCRAPER FOR SAWMILLS. KUNKLE'S SAFETY VALVE AND MUFFLER. +7 MACHINE FOR LAYING DRAIN PIPES., scientific american, 1892-07-09
Keywords:
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