Granted Patent
Utility
US 5,437,625 · App. 08/004,589
Apparatus for intubation of lacrimal drainage pathway
Inventor:
Katsuaki Kurihashi
Patented Case
View Patent ↗
Granted: Aug 1, 1995
Filed: Jan 14, 1993
Inventor
Katsuaki Kurihashi
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.