Granted Patent
Utility
US 4,849,552 · App. 07/146,258
Preparation of fluoroaromatic compounds in dispersion of potassium fluoride
Inventor:
Gary L. Cantrell
Patented Case
View Patent ↗
Granted: Jul 18, 1989
Filed: Feb 5, 1987
Inventor
Gary L. Cantrell
Assignee (at issue)
MALLINCKRODT LLC
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.