Granted Patent
Utility
US 5,207,459 · App. 07/728,450
Transition coupling for pipes
Inventor:
Charles J. Glover
Patented Case
View Patent ↗
Granted: May 4, 1993
Filed: Jul 11, 1991
Inventor
Charles J. Glover
Assignee (at issue)
Dresser Industries, Inc.
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.