ready for use. Simplest in con struction most efficient in oper ation. Send for Catalogue and Prices. The American Bell Telephone Company Boston Mass. This Company owns Letters carbon telephones. ECON SVAAIOLITT, scientific american, 1895-01-05
ready for use. Simplest in con struction most efficient in oper ation. Send for Catalogue and Prices. The American Bell Telephone Company Boston Mass. This Company owns Letters carbon telephones. ECON SVAAIOLITT, scientific american, 1895-01-05
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