Patents Assigned to APSEE, Incorporated
  • Means for generating a negative charge
    Patent number: 4109290
    Abstract: An improved means for generating a negative charge effect in the environment, in which oppositely charged electrically conductive plates are coated with secondary emissive material and are enclosed in a sealed container such as glass that is preferably filled with an inert gas such as argon.
    Type: Grant
    Filed: April 18, 1977
    Date of Patent: August 22, 1978
    Assignee: APSEE, Incorporated
    Inventor: James C. Gallagher