Granted Patent
Utility
US 4,601,770 · App. 06/533,651
Fiber reinforced plastic pipe tee
Inventors:
Ronald G. Ulrich, Ralph Friedrich
Patented Case
View Patent ↗
Granted: Jul 22, 1986
Filed: Sep 19, 1983
Inventors
Ronald G. Ulrich
Ralph Friedrich
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.