Granted Patent
Utility
US 4,863,693 · App. 07/139,108
Analysis instrument having a blow molded reaction chamber
Inventor:
Gary W. Howell
Patented Case
View Patent ↗
Granted: Sep 5, 1989
Filed: Dec 23, 1987
Inventor
Gary W. Howell
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND 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.