Patents Assigned to Joseph R. Ehrlich
  • Bubble pipe
    Patent number: 4246717
    Abstract: A bubble pipe comprises a wide outer tube and one or more shorter narrower inner tubes that project beyond the outer tube. The inner tube or tubes may be slidable within the outer tube.
    Type: Grant
    Filed: April 3, 1979
    Date of Patent: January 27, 1981
    Assignee: Joseph R. Ehrlich
    Inventor: Jack S. Wachtel