The cathode sub-assembly of a polarographic sensor comprises an elongate housing with a longitudinal opening therethrough and with noble metal wires extending completely through the opening, the wires held symmetrically in the longitudinal opening by an extensive plug of glass which is solidified in...http://www.google.es/patents/US5223123?utm_source=gb-gplus-sharePatente US5223123 - Method for making a polarographic oxygen sensor
