Patents by Inventor Doug A. Erwin

Doug A. Erwin 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).

  • Patent number: D374667
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: October 15, 1996
    Assignee: Siemens Palm Communication Inc.
    Inventors: Erich C. Elkins, Wayne E. McKinnon, David E. Bryant, Mary E. Kingsbury, Doug A. Erwin, William C. McRight
  • Patent number: D374674
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: October 15, 1996
    Assignee: Siemens Rolm Communications Inc.
    Inventors: Erich C. Elkins, Wayne E. McKinnon, David E. Bryant, Mary E. Kingsbury, Doug A. Erwin, William C. McRight
  • Patent number: D375095
    Type: Grant
    Filed: June 14, 1995
    Date of Patent: October 29, 1996
    Assignee: Siemens Rolm Communications Inc.
    Inventors: Stefan Hillenmayer, Ulrich Skrypalle, Wayne E. McKinnon, David E. Bryant, Mary E. Kingsbury, Erich C. Elkins, Doug A. Erwin
  • Patent number: D386759
    Type: Grant
    Filed: August 19, 1996
    Date of Patent: November 25, 1997
    Assignee: Siemens Business Communication Systems
    Inventors: Erich C. Elkins, Wayne E. McKinnon, David E. Bryant, Mary E. Kingsbury, Doug A. Erwin, William C. McRight
  • Patent number: D387063
    Type: Grant
    Filed: June 15, 1995
    Date of Patent: December 2, 1997
    Assignee: Siemens Rolm Communications Inc.
    Inventors: Stefan Hillenmayer, Ulrich Skrypalle, Wayne E. McKinnon, David E. Bryant, Mary E. Kingsbury, Erich C. Elkins, Doug A. Erwin
  • Patent number: D389142
    Type: Grant
    Filed: July 12, 1996
    Date of Patent: January 13, 1998
    Assignee: Siemens Business Communication Systems, Inc.
    Inventors: Joel Q. Adams, Harald F. Bader, David E. Bryant, Erich C. Elkins, Doug A. Erwin, Wayne E. McKinnon, Ulrich Skrypalle
  • Patent number: D392284
    Type: Grant
    Filed: July 12, 1996
    Date of Patent: March 17, 1998
    Assignee: Siemens Business Communications Systems
    Inventors: Joel Q. Adams, Harald F. Bader, David E. Bryant, Erich C. Elkins, Doug A. Erwin, Wayne E. McKinnon, Ulrich Skrypalle
  • Patent number: D428868
    Type: Grant
    Filed: July 15, 1999
    Date of Patent: August 1, 2000
    Assignees: Siemens Information and Communication Products LLC., Ameritech Corporation
    Inventors: David E. Bryant, Jennifer Kelley, James J. McDermott, Wade A. Butcher, Lu Ann Paletta, Doug A. Erwin, William J. Morris, Eileen Schwab