Granted Patent
Utility
US 4,305,395 · App. 06/062,157
Method of positioning tubing in lacrimal ducts and intubation set therefor
Inventor:
Miguel Martinez
Patented Case
View Patent ↗
Granted: Dec 15, 1981
Filed: Jul 30, 1979
Inventor
Miguel Martinez
Assignee (at issue)
Concept Group LLC
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.