May 28, 1872

  • The committee of Steinway & Sons workers visit Albert Steinway (who is in charge of the factory), demanding 8-hour workday and 20% pay increase.
  • C.F. Theodor Steinweg receives the United States patent # 127,383 to the ” cupola plate construction for grand piano”, and the United States patent # 127,384, to “cupola plate construction for upright piano”.