Granted Patent
Utility
US 4,655,199 · App. 06/717,954
Spinal column straightening apparatus
Inventor:
Arthur D. Steffee
Patented Case
View Patent ↗
Granted: Apr 7, 1987
Filed: Mar 29, 1985
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.