Granted Patent
Utility
US 5,356,782 · App. 07/940,059
Analytical test apparatus with on board negative and positive control
Inventors:
David R. Moorman, David Ledden, David Daniel Webster, Brian A. Heald
Patented Case
View Patent ↗
Granted: Oct 18, 1994
Filed: Sep 3, 1992
Inventors
David R. Moorman
David Ledden
David Daniel Webster
Brian A. Heald
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.