Granted Patent
Utility
US 4,136,697 · App. 05/629,952
Fibers of high fluid-holding capacity
Inventor:
Frederick R. Smith
Patented Case
View Patent ↗
Granted: Jan 30, 1979
Filed: Nov 7, 1975
Inventor
Frederick R. Smith
Assignee (at issue)
Avtex Fibers 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.