Granted Patent
Utility
US 4,765,458 · App. 06/919,083
Asbestos free hardened monolithic filler mass
Inventor:
Edith M. Flanigen
Patented Case
View Patent ↗
Granted: Aug 23, 1988
Filed: Oct 14, 1986
Inventor
Edith M. Flanigen
Assignee (at issue)
NI 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.