Granted Patent
Utility
US 5,442,136 · App. 08/136,167
Method of installation of partitioning device for a tubular conduit
Inventor:
Jerry L. Allen
Patented Case
View Patent ↗
Granted: Aug 15, 1995
Filed: Oct 15, 1993
Inventor
Jerry L. Allen
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.