Granted Patent
Utility
US 4,254,763 · App. 06/046,534
Surgical retractor assembly
Inventors:
James F. McCready, John R. Bookwalter, Roy W. Downing, George W. Guay
Patented Case
View Patent ↗
Granted: Mar 10, 1981
Filed: Jun 7, 1979
Inventors
James F. McCready
John R. Bookwalter
Roy W. Downing
George W. Guay
Assignee (at issue)
Codman & Shurtleff, 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.