Granted Patent
Utility
US 5,748,331 · App. 08/732,299
Process control strip and method for recording
Inventor:
Thomas Kohler
Patented Case
View Patent ↗
Granted: May 5, 1998
Filed: Mar 6, 1997
Inventor
Thomas Kohler
Assignee (at issue)
Linotype-Hell AG
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.