Granted Patent
Utility
US 4,571,188 · App. 06/627,676
Occlusal matrix for light cured composites
Inventor:
James Hamilton
Patented Case
View Patent ↗
Granted: Feb 18, 1986
Filed: Jul 5, 1984
Inventor
James Hamilton
Assignee (at issue)
Sybron 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.