Granted Patent
Utility
US 5,342,290 · App. 08/042,280
Appliance for improved radiographic visualization of the cervical spine
Inventor:
Stephen C. Schuellein
Patented Case
View Patent ↗
Granted: Aug 30, 1994
Filed: Apr 2, 1993
Inventor
Stephen C. Schuellein
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.