Granted Patent
Utility
US 4,859,419 · App. 07/019,923
Diagnostic manifold apparatus
Inventors:
Martin E. Marks, William J. Littlehales, Chu-An Chang
Patented Case
View Patent ↗
Granted: Aug 22, 1989
Filed: Feb 27, 1987
Inventors
Martin E. Marks
William J. Littlehales
Chu-An Chang
Assignee (at issue)
American Bionetics, Inc.
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.