Granted Patent
Utility
US 5,797,937 · App. 08/683,194
Ophthalmologic knife
Inventors:
Kazuo Ichikawa, Toshiyuki Nakajima
Patented Case
View Patent ↗
Granted: Aug 25, 1998
Filed: Jul 18, 1996
Inventors
Kazuo Ichikawa
Toshiyuki Nakajima
Assignee (at issue)
Canon Staar Co., 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.