Granted Patent
Utility
US 4,544,353 · App. 06/434,016
Orthodontic appliance for direct bonding to a tooth
Inventors:
Robert Stephen Maurer, Jr., Min-Hua Tsai
Patented Case
View Patent ↗
Granted: Oct 1, 1985
Filed: Oct 12, 1982
Inventors
Robert Stephen Maurer, Jr.
Min-Hua Tsai
Assignee (at issue)
Unitek
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.