Patents by Inventor Alvar Torstensson

Alvar Torstensson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Differential pressure regulator
    Patent number: D449093
    Type: Grant
    Filed: November 16, 2000
    Date of Patent: October 9, 2001
    Assignee: Tour & Andersson Hydronics AB
    Inventors: Anders Engelbrektsson, Alvar Torstensson
  • Valve handle
    Patent number: D299051
    Type: Grant
    Filed: March 14, 1986
    Date of Patent: December 20, 1988
    Assignee: Tour & Andersson AB
    Inventor: Alvar Torstensson