Patents Assigned to Keithley Instruments
  • Guarded printed circuit board islands
    Patent number: 5490325
    Abstract: Low dielectric absorption component connection points are created on a printed circuit board by cutting apertures in the board surrounding the points, leaving only narrow stems still connecting the resulting island to the board.
    Type: Grant
    Filed: September 30, 1994
    Date of Patent: February 13, 1996
    Assignee: Keithley Instruments
    Inventors: James A. Niemann, George Topala