Granted Patent
Utility
US 5,797,749 · App. 08/820,567
Dental composition
Inventors:
Raymond L. Bertolotti, Thomas S. Blake
Patented Case
View Patent ↗
Granted: Aug 25, 1998
Filed: Mar 19, 1997
Inventors
Raymond L. Bertolotti
Thomas S. Blake
Assignee (at issue)
Danville Materials, 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.