Granted Patent
Utility
US 5,590,790 · App. 08/361,061
Apparatus including a vacuum pump for assessing the condition of a bank note by measuring airflow drawn through the bank note
Inventor:
Andrew G. Saunders
Patented Case
View Patent ↗
Granted: Jan 7, 1997
Filed: Dec 19, 1994
Inventor
Andrew G. Saunders
Assignee (at issue)
AT&T Global Information Solutions Company
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.