Granted Patent
Utility
US 4,797,256 · App. 07/059,789
Registration device for blood test strips
Inventor:
Thomas M. Watlington
Patented Case
View Patent ↗
Granted: Jan 10, 1989
Filed: Jun 5, 1987
Inventor
Thomas M. Watlington
Assignee (at issue)
Boehringer Mannheim GmbH
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.