Patents Assigned to Cleveland Tubing Inc.
  • Portable flexible and extendable drain pipe
    Patent number: 7677271
    Abstract: A flexible collapsible corrugated drain pipe has a corrugation structure that permits a tight bending radius and relatively facile collapsing and expansion of corrugations, thereby permitting convenient manipulation and installation of drain pipe and packaging, display, storage and transportation of the collapsed pipe sections.
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: March 16, 2010
    Assignee: Cleveland Tubing Inc.
    Inventors: E. Michael Boettner, Billy J. Hall, Frank T. Hoffman