Granted Patent
Utility
US 4,370,165 · App. 06/265,883
Low silver dental amalgam alloy composition
Inventor:
Robert De Luca
Patented Case
View Patent ↗
Granted: Jan 25, 1983
Filed: May 21, 1981
Inventor
Robert De Luca
Assignee (at issue)
Johnson & Johnson Dental Products Company
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.