Patents by Inventor Per-Ake Roskvist

Per-Ake Roskvist 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).

  • Box for flexible disks
    Patent number: D335574
    Type: Grant
    Filed: September 28, 1990
    Date of Patent: May 18, 1993
    Assignee: ABA System AG
    Inventors: Per-Ake Roskvist, Maj-Lis Roskvist
  • Combined cassette box, lid and suspension handle
    Patent number: D348769
    Type: Grant
    Filed: June 18, 1992
    Date of Patent: July 19, 1994
    Assignee: ABA Systems Svenska Aktiebolag
    Inventors: Per-Ake Roskvist, Lars-Erik Christiansson