AN IMPROVED MECHANICAL MIXER. THE BROUGHTON MIXER. REVERSING ATTACHMENT FOR TYPE WRITERS. AN IMPROVED ORGAN PALLET. AN IMPROVED FAMILY ICE MACHINE. DERMIGNY'S FAMILY ICE MACHINE. AN IMPROVED COMBINATION LOCK. DOUGLASS' COMBINATION LOCK. GIRARDIN'S ORGAN PALLET. 9 S1M INZRD, scientific american, 1889-11-30

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