Granted Patent
Utility
US 4,680,102 · App. 06/800,683
Electrophoretic apparatus
Inventor:
Shiro Ishiwatari
Patented Case
View Patent ↗
Granted: Jul 14, 1987
Filed: Nov 22, 1985
Inventor
Shiro Ishiwatari
Assignee (at issue)
Olympus Optical Co., 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.