Granted Patent
Utility
US 4,732,617 · App. 06/910,669
Fluoride-containing compositions
Inventors:
Brian Edward Causton, Alfiati N. T. Thuy
Patented Case
View Patent ↗
Granted: Mar 22, 1988
Filed: Sep 23, 1986
Inventors
Brian Edward Causton
Alfiati N. T. Thuy
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT CORPORATION
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.