AN IMPROVED WINDOW SCREEN. AN IMPROVED SCREWDRIVER. TEUBNER'S SCREWDRIVER. Only One More Number This Year. Failure of the Mot Water Company. AN IMPROVED CHIMNEY COVER. AN IMPROVED CURTAIN RING ATTACHMENT. AN IMPROVED DEVICE FOR FELLING TREES. BROWN'S DEVICE FOR FELLING TREES. GRAVES' WINDOW SCREEN. LHOTE'S CHIMNEY COVER. ALLEN'S CURTAIN RING ATTACHMENT., scientific american, 1889-12-21
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