Granted Patent
Utility
US 5,648,834 · App. 08/598,813
Film tension sensing device
Inventor:
Dean J. Kitchen
Patented Case
View Patent ↗
Granted: Jul 15, 1997
Filed: Feb 9, 1996
Inventor
Dean J. Kitchen
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.