Patents Assigned to Charter-Wallace, Inc.
  • Method for assembling micro-filter units
    Patent number: 4052779
    Abstract: An apparatus and a method are provided for assembling micro-filter units having a barrel, a plug adapted to be inserted in the barrel, and a filter disc clamped between the barrel and the plug, which are characterized in that the filter disc is punched out and seated in the barrel in a single stroke of a punch.
    Type: Grant
    Filed: April 22, 1976
    Date of Patent: October 11, 1977
    Assignee: Charter-Wallace, Inc.
    Inventor: H. Eric Hunter