Granted Patent
Utility
US 6,637,092 · App. 09/787,662
Method and apparatus for winding a helical pipe from its inside
Inventor:
Stanley W. O. Menzel
Patented Case
View Patent ↗
Granted: Oct 28, 2003
Filed: Mar 21, 2001
Inventor
Stanley W. O. Menzel
Assignee (at issue)
Rib Loc Australia Pty Limited
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.