Granted Patent
Utility
US 4,900,072 · App. 07/119,387
Fiber-reinforced pipe flange
Inventor:
Dalton W. Bordner
Patented Case
View Patent ↗
Granted: Feb 13, 1990
Filed: Nov 6, 1987
Inventor
Dalton W. Bordner
Assignee (at issue)
Ameron, 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.