development of phones

By shanepeneda

  • photo phone was invented

    photo phone was invented

  • american bell telephone company

    american bell telephone company

  • first wireless phone call

    first wireless phone call

  • adelaid exchange was open

    adelaid exchange was open

  • telephone service between new york and new jersey

    telephone service between new york and new jersey

  • american telephonr and telagraph company(AT&T)

    american telephonr and telagraph company(AT&T)

  • telephone court cases are conformed

    telephone court cases are conformed

  • smith patents a telagraph switch

    smith patents a telagraph switch

  • automatic telephone exchange

    automatic telephone exchange

  • opening of telephone conpany

    opening of telephone conpany