Granted Patent
Utility
US 4,258,455 · App. 06/004,597
Method for classifying fibers
Inventor:
Edward E. Werner
Patented Case
View Patent ↗
Granted: Mar 31, 1981
Filed: Jan 18, 1979
Inventor
Edward E. Werner
Assignee (at issue)
Kimberly-Clark 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.