Granted Patent
Utility
US 4,689,251 · App. 06/823,728
Anticaking and antidusting composition
Inventors:
Anthony W. Newman, Michael Bishop
Patented Case
View Patent ↗
Granted: Aug 25, 1987
Filed: Jan 29, 1986
Inventors
Anthony W. Newman
Michael Bishop
Assignee (at issue)
DeSoto, 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.