Patents by Inventor Joerg Ratzlaff

Joerg Ratzlaff 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).

  • Computer housing
    Patent number: D348254
    Type: Grant
    Filed: July 15, 1992
    Date of Patent: June 28, 1994
    Assignee: International Business Machines Corporation
    Inventor: Joerg Ratzlaff
  • Computer housing
    Patent number: D348438
    Type: Grant
    Filed: July 15, 1992
    Date of Patent: July 5, 1994
    Assignee: International Business Machines Corporation
    Inventor: Joerg Ratzlaff
  • Portable computer housing
    Patent number: D349103
    Type: Grant
    Filed: July 15, 1992
    Date of Patent: July 26, 1994
    Assignee: International Business Machines Corporation
    Inventor: Joerg Ratzlaff
  • Display monitor
    Patent number: D350122
    Type: Grant
    Filed: July 15, 1992
    Date of Patent: August 30, 1994
    Assignee: International Business Machines Corp.
    Inventor: Joerg Ratzlaff
  • Hair clipper
    Patent number: D833678
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: November 13, 2018
    Inventor: Joerg Ratzlaff