Patents Assigned to Lawrence Electronics Co.
  • Hydrogen detector
    Patent number: 4477778
    Abstract: A hydrogen detector having a hydrogen-permeable membrane between the atmosphere and the inside of a vacuum tube is heated by an adjacent filament located within the tube.
    Type: Grant
    Filed: March 15, 1982
    Date of Patent: October 16, 1984
    Assignees: Lawrence Electronics Co., Julia F. Lawrence
    Inventors: Samuel C. Lawrence, Jr. deceased, by Julia F. Lawrence executrix, Gary M. Lawrenson