Granted Patent
Utility
US 4,850,873 · App. 07/178,296
Prosthodontic restoration components
Inventors:
Richard J. Lazzara, Keith D. Beaty
Patented Case
View Patent ↗
Granted: Jul 25, 1989
Filed: Apr 4, 1988
Inventors
Richard J. Lazzara
Keith D. Beaty
Assignee (at issue)
Implant Innovations, 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.