Granted Patent
Utility
US 5,211,748 · App. 07/819,638
Identifiable dental restorative material
Inventors:
Peter Bryce Robinson, Brian J. Millar
Patented Case
View Patent ↗
Granted: May 18, 1993
Filed: Jan 10, 1992
Inventors
Peter Bryce Robinson
Brian J. Millar
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.