buelampe with convergent, downwardly directed electrodes and with a closed jrnring which serves to generate one or more in relation to the light producing symmetrically located spredefelter.TITO LIVIO CARBONE
buelampe for mineral coal.IGNACE HIPPOLYTE HEGNER
buelampe if coal brought by their own and kulholderens weight.FRED MOSEYGEORGE MC. MULLENFREDERICK BLANCKENSEE
buelampe with converging downwards turned to coal.TITO LIVIO CARBONE
buelampe with tangential to lampeaksen lying kulpar.DAGOBERT TIMARKARL VON DREGER
electrical buelampe with two lysbuer between the three electrodes.LORENS SIGFRID ANDERSSON
buelampe with coal, which inclined towards each other.ERNEST EISENMANNJOSEPH ALBERT RIGNON
buelampe with double overkul and single underkul.TITO LIVIO CARBONE
buelampe if electrodes form an acute angle with each other.TITO LIVIO CARBONE
buelampe with skraat against each other favoured coal.HENDRICUS JOHANNES JACOBUS JABURG