Scientific American. 46 … ORE BREAKER, SSatray most exhaustive series of articles on Crookes tubes and Piano action, M. Steinert..... 85,716, DRY BATTERIES.—A PAPER BY L. K. the experiments performed with them. Among them Steam Ore Stamp, Pianoforte action, B. F. Carr 585,740 Piano hammers, machine for making, A. Doleg.-…
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