Patents by Inventor David L. Randall

David L. Randall 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).

  • Personal computer system with security features and method
    Patent number: 5388156
    Abstract: This invention relates to personal computer systems and, more particularly, to such a system having security features enabling control over access to data retained in such a system.
    Type: Grant
    Filed: February 26, 1992
    Date of Patent: February 7, 1995
    Assignee: International Business Machines Corp.
    Inventors: John W. Blackledge, Jr., Grant L. Clarke, Jr., Richard A. Dayan, Kimthanh D. Le, Patrick E. McCourt, Matthew T. Mittelstedt, Dennis L. Moeller, Palmer E. Newman, David L. Randall, JoAnna B. Yoder