Granted Patent
Utility
US 4,222,382 · App. 06/006,699
Femoral component hip joint prosthesis extractor
Inventors:
Erik K. Antonsson, Woodie C. Flowers
Patented Case
View Patent ↗
Granted: Sep 16, 1980
Filed: Jan 26, 1979
Inventors
Erik K. Antonsson
Woodie C. Flowers
Assignee (at issue)
MASSACHUSETTS INSTITUTE OF TECHNOLOGY
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.