Granted Patent
Utility
US 5,398,975 · App. 07/851,089
Composite threaded pipe connectors and method
Inventor:
Pat Simmons
Patented Case
View Patent ↗
Granted: Mar 21, 1995
Filed: Mar 13, 1992
Inventor
Pat Simmons
Assignee (at issue)
CENTREON CORPORATION
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.