Patents by Inventor David G. Mbuthia

David G. Mbuthia 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).

  • Portable unit with smoke alarm, clock radio, compass, retractable table, and lamp
    Patent number: 4949077
    Abstract: A personal security device is disclosed which includes, in combination, a smoke detection and smoke alarm system, a radio, a digital time clock, a compass, a high intensity lamp, and a retractable writing table. The writing table is disposed below the lamp beam to facilitate use of the table in a darkened area.
    Type: Grant
    Filed: October 2, 1989
    Date of Patent: August 14, 1990
    Inventor: David G. Mbuthia
  • Combined radio, compass, flashlight and personal alarm
    Patent number: D320210
    Type: Grant
    Filed: September 15, 1989
    Date of Patent: September 24, 1991
    Inventor: David G. Mbuthia