Granted Patent
Utility
US 4,442,249 · App. 06/449,068
Partially oriented polyester yarn finish
Inventors:
Gerard Lees, Barry D. Causby
Patented Case
View Patent ↗
Granted: Apr 10, 1984
Filed: Dec 13, 1982
Inventors
Gerard Lees
Barry D. Causby
Assignee (at issue)
Fiber 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.