Patents Assigned to Hewlett Electronics
  • Child proximity detector
    Patent number: 5646593
    Abstract: A child proximity detection unit includes two transceivers which communicate messages with one another. Only a properly authorized parent can attend a message to the child unit. However, a properly authorized parent can authorize another parent to adopt a child unit.
    Type: Grant
    Filed: April 26, 1995
    Date of Patent: July 8, 1997
    Assignee: Hewlett Electronics
    Inventors: Michael Hughes, Ian Clarke, William E. Hewlett