Granted Patent
Utility
US 5,879,252 · App. 08/935,101
Arrowhead
Inventor:
Gregory G. Johnson
Patented Case
View Patent ↗
Granted: Mar 9, 1999
Filed: Sep 25, 1997
Inventor
Gregory G. Johnson
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.