Granted Patent
Utility
US 4,771,767 · App. 06/825,251
Apparatus and method for maintaining vertebrae in a desired relationship
Inventor:
Arthur D. Steffee
Patented Case
View Patent ↗
Granted: Sep 20, 1988
Filed: Feb 3, 1986
Inventor
Arthur D. Steffee
Assignee (at issue)
AcroMed 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.