Granted Patent
Utility
US 4,545,572 · App. 06/642,634
Apparatus for holding the head of a patient for surgery
Inventor:
James L. Day
Patented Case
View Patent ↗
Granted: Oct 8, 1985
Filed: Aug 20, 1984
Inventor
James L. Day
Assignee (at issue)
Ohio Medical Instrument Company, 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.