Granted Patent
Utility
US 4,240,807 · App. 05/646,386
Substrate having a thermoplastic binder coating for use in fabricating abrasive sheets and abrasive sheets manufactured therewith
Inventor:
Frank J. Kronzer
Patented Case
View Patent ↗
Granted: Dec 23, 1980
Filed: Jan 2, 1976
Inventor
Frank J. Kronzer
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.