Granted Patent
Utility
US 4,528,980 · App. 06/543,207
Acetabulum sizer and drill guide
Inventor:
Robert V. Kenna
Patented Case
View Patent ↗
Granted: Jul 16, 1985
Filed: Oct 19, 1983
Inventor
Robert V. Kenna
Assignee (at issue)
Howmedica Inc.
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.