Granted Patent
Utility
US 6,554,767 · App. 10/116,488
Endoscopic optical adapter freely attachable to and detachable from endoscope
Inventor:
Yasundo Tanaka
Patented Case
View Patent ↗
Granted: Apr 29, 2003
Filed: Apr 4, 2002
Inventor
Yasundo Tanaka
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.