Granted Patent
Utility
US 4,612,930 · App. 06/713,552
Head fixation apparatus including crown and skull pin
Inventor:
Paul W. Bremer
Patented Case
View Patent ↗
Granted: Sep 23, 1986
Filed: Mar 19, 1985
Inventor
Paul W. Bremer
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.