Patents by Inventor Karl D. Langmuir

Karl D. Langmuir 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).

  • Uninterruptible power supply
    Patent number: D601956
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: October 13, 2009
    Assignee: American Power Conversion Corporation
    Inventors: Meng-Chang Liu, Kyle Brookshire, Karl D. Langmuir
  • Uninterruptible power supply
    Patent number: D602431
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: October 20, 2009
    Assignee: American Power Conversion Corporation
    Inventors: Meng-Chang Liu, Kyle Brookshire, Karl D. Langmuir
  • Uninterruptible power supply
    Patent number: D615036
    Type: Grant
    Filed: October 9, 2009
    Date of Patent: May 4, 2010
    Assignee: American Power Conversion Corporation
    Inventors: Meng-Chang Liu, Kyle Brookshire, Karl D. Langmuir
  • Uninterruptible power supply
    Patent number: D615037
    Type: Grant
    Filed: October 9, 2009
    Date of Patent: May 4, 2010
    Assignee: American Power Conversion Corporation
    Inventors: Meng-Chang Liu, Kyle Brookshire, Karl D. Langmuir
  • Uninterruptible power supply
    Patent number: D626066
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: October 26, 2010
    Assignee: American Power Conversion Corporation
    Inventors: Meng-Chang Liu, Kyle Brookshire, Karl D. Langmuir
  • Wheeled luggage case
    Patent number: D395164
    Type: Grant
    Filed: December 23, 1996
    Date of Patent: June 16, 1998
    Assignee: Samsonite Corporation
    Inventors: Karl D. Langmuir, Amy E. Wolf, Coryndon M. Luxmoore