424 Scientific American May 19, 1906. 7 … Speed. timing apparatus, Aone MM Ory 820,123 of P T bli Z A ‘. l For Gas and Gasoline Engines is chine for taaklngs M. S. Burdette...... 819,848 \ des : U1 i Ic *® ppro a 4 4 inning and twisting machine bands, ma- ‘ V is the Edison Battery and Spark Spirometer, J. S. Renvoize ........ MS 820,259…
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