Granted Patent
Utility
US 4,887,595 · App. 07/079,457
Surgically implantable device for spinal columns
Inventors:
Charles F. Heinig, Marc A. Asher, Walter E. Strippgen
Patented Case
View Patent ↗
Granted: Dec 19, 1989
Filed: Jul 29, 1987
Inventors
Charles F. Heinig
Marc A. Asher
Walter E. Strippgen
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.