Più antiche e più grandi produttori negli Stati Uniti di gomma vulcanizzata e tessuti per scopi meccanici. Cinghie di gomma e il tubo flessibile di ebanite solida mole smeriglio. I lavori tecnici della Western University of Pennsylvania. Antica Ingegneria Elettrica Osservatorio J. N. KEELER fine di leccare il direttore dell'Osservatorio). Gli esami di ingresso per il prossimo mandato sett. 14th. $100 per il miglior ingresso esami. "Pittsburg è il luogo per lo studio di ingegneria." per scrivere catalogo W. J. HOLLAND Dottorato di ricerca DD. Pres PITTSBURG PA. Ventole. Lame Self-Oiling cuscinetti. 24-page catalogo gratuito. Gomma anche pi esti rotoli per
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