No. 13. PATENTLISTE DER „ELEKTROTECHNISCHEN RUNDSCHAU. 103 Belgien. No. 147041. Dejongls, Biuxelles. 2. 1. 1900. Nouveau Systeme a’exploitation des reseaux telephoniques. No. 147 088. Hertel Ce., Bruxelles. 3. 1. 1900. Allumage electrique ä rupture pour moteurs au gaz au petrole ete avec vitesse reglable. No. 147 089. Dasekiug, Bruxelles. 3. 1. 1900. Aecumulateur. No. 147 090. Mae Gurty, Bruxelles. 3. 1. 1900. Moderateur de vitesse pour appareils elee- triques et autres. No. 147 092. Lachenmeyer, Bruxelles. 3 1. 1900. Prise de courant pour tramways electriques. No. 147104. Flechtenmacher, Bruxelles. 4. 1. 1900. Systeme perfectionnee de ckemin de fer elec trique. No. 147 128. G. Böhmer Cie., Bruxelles. 6. 1. 1900. Procede pour la fabrieation de matiere active pour accumulateurs electriques. No. 147136. Bonhivers, Bruxelles. 6. 1. 19C0. Perfectionnements aux lampes a arc et ä incandescence. No. 147143. Bremer, Bruxelles. 8. 1 1900. Lampe ä arce. No. 147 158. Upton, Bruxelles. 8. 1. 1900. Per fectionnements dans les lampes electriques ä arc. England. Folgende Patentschriften sind in den Wochen vom 7. Februar bis 14. März im Drucke erschienen. 1838 No. 24 982. Smith. Appliance for overhead electric traction. 1899. No. 5229. British Thomson-Houston Co.Ld. Method of and apparatus for making and breaking or verying high potential electric currents. No. 3469. Emausse. Primary battery. No. 5392. Earle Controlling switches for electric motors. No. 5393. Bede. Electric traction on the conduit systsm. No. 6335. Gehre. Device for producing electric at sea by the action of the waves. No. 6473. Bolle. Electrical apparatus for igniting gas burnes from a distance. No. 6819. Jones. Electric switches. No. 6820. Margini. Trolley or like current collectors for electric railways and tramways. No. 68:34. Townsend Wilson J. Mc. Clelland. Electrical measuring instruments. No. 8358. Niblett & Sutherland. Electric storage or secondary batteries. No. 8497. Bartenstein. Bulbs for electric incandes cence lamps. No. 10134. British Thomson-Houston Co. Ld. Con trolling deviees for electric motors. No. 10164. Simon. Interruptors for electric currents. No. 10163. Lake. Electric Circuit breakes. No. 20 803. British Thomson-Houston Co. Ld. Elec tric meters. No. 21669. British Thomsou-Houston Co. Ld. Elec tric meters. No. 21780. Lake. Electric relays. No. 23829. Koppelmann. System for the gene- ration of electric current at constant potential. No 24 717. Mills. Fire alarm telegraph apparatus. No. 24870. Schmutz. Electric hair brushes. No. 25 011. Thompson. Primary electric battery. No. 5104. Braun. Reinforcement of electrical waves and avoidance of loss by straying reflection and the like by means of a eon- ducter. No. 5211. Miller. Electric incandescent lamps. No. 5460. Wite. Incandescent bodies for electric incandescent lamps. No. 5734. Nitali. Hydrocarbon engines for driving dyuamo electric machines and dynamo electric machines driven thereby. No. 6054. Berditschewsky - Apostoloff. Electric lamps. No. 7415. Caryq Delevy. Electrical cooking apparatus. No. 10 228. Boult. Electric Controllers. No. 11552. Voigt & Hatffner. Electric tumbler switch. No. 16 650 Petersen. Conduits suitable for electric mains. No. 20328. Robinson. Dynamo electric generators or transformers. No. 18 250. Marino. Electrolytes. No. 21378. Halsey. Combined matimum and inte- grating electric meter. 1900. No. 27. Lyon & Talbot - Crosble. Electric arc lamps. No. 176. Lachenmeyer. Current receiver for electric railways. No. 675. Lake. Electric batteries,
