Hearing. Born as Jabar (or Jabber) Esquarzadeh in Ervian; founded the first school for the deaf in Persia (Iran), in Teheran in 1924. He changed his surname to Bagcheban, meaning "gardener", to reflect his work in teaching children. His hearing daughter, Samineh, went to Clarke School for the Deaf and to Smith College in the U.S. for a master's degree in deaf education, ringing back new ideas for deaf education in Iran; other members of his family also got involved in deaf education and his schools. He also invented a bone conduction hearing aid and a kind of telephone for the deaf, both patented in 1925.