baer and watson by new ideas made the telephone.in one experiment,a drop of sulfuric acid splashed onto baer's lap,hurts him shouting:" mr.watson,i need you,please come here!" this sentence by telephone through a wire to watson 's ears,call success!in march 7,1876,baer became the invention of the telephone patent.
the life of baer received 18 patents,and cooperation with others obtained 12 patents.he conceived of telephone lines are buried underground,or suspension in the air,it is connected to the housing,villages,factories ......in this way,any place can directly call.today,baer's vision has already become a reality.
