Granted Patent
Utility
US 4,834,944 · App. 07/040,719
Automatic analytical apparatus
Inventor:
Koichi Wakatake
Patented Case
View Patent ↗
Granted: May 30, 1989
Filed: Apr 20, 1987
Inventor
Koichi Wakatake
Assignee (at issue)
Mitsubishi Chemical Industries, Ltd.
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.