Granted Patent
Utility
US 4,511,423 · App. 06/560,107
Apparatus for winding fiber reinforced pipe fittings
Inventors:
Gerald M. Magarian, Ralph Friedrich
Patented Case
View Patent ↗
Granted: Apr 16, 1985
Filed: Dec 12, 1983
Inventors
Gerald M. Magarian
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.