Granted Patent
Utility
US 4,713,290 · App. 06/821,374
High strength and modulus polyvinyl alcohol fibers and method of their preparation
Inventors:
Young D. Kwon, Sheldon Kavesh, Dusan C. Prevorsek
Patented Case
View Patent ↗
Granted: Dec 15, 1987
Filed: Jan 22, 1986
Inventors
Young D. Kwon
Sheldon Kavesh
Dusan C. Prevorsek
Assignee (at issue)
ALLIED CONSULTING, 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.