Granted Patent
Utility
US 5,358,402 · App. 08/142,836
Ceramic orthodontic bracket with archwire slot liner
Inventors:
David P. Reed, John S. Kelly, James D. Hansen
Patented Case
View Patent ↗
Granted: Oct 25, 1994
Filed: Oct 25, 1993
Inventors
David P. Reed
John S. Kelly
James D. Hansen
Assignees (at issue)
Minnesota Mining and Manufacturing Company
Ceradyne, 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.