Granted Patent
Utility
US 4,704,270 · App. 07/006,040
Opaque dental-care composition
Inventors:
Karl-Hans Muller, Matthias Neumuller, Gunther Turk
Patented Case
View Patent ↗
Granted: Nov 3, 1987
Filed: Jan 21, 1987
Inventors
Karl-Hans Muller
Matthias Neumuller
Gunther Turk
Assignee (at issue)
Degussa AG
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.