Patents by Inventor R. John Liberty

R. John Liberty 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).

  • Magnetic data storage and retrieval system
    Patent number: 4143407
    Abstract: A system for recording and retrieval of data consisting of a data storage means having a pre-recorded signal imposed thereon, data recording and playback means, and a control means. The control means is coupled to the recording and playback means so that it receives the pre-recorded signal and controls the rate at which data is recorded on and recovered from the data storage means with respect to the pre-recorded signal.
    Type: Grant
    Filed: June 17, 1977
    Date of Patent: March 6, 1979
    Assignee: TRW Inc.
    Inventor: R. John Liberty