Granted Patent
Utility
US 4,947,849 · App. 07/075,543
Non-contact type tonometer
Inventors:
Susumu Takahashi, Fumio Ohtomo
Patented Case
View Patent ↗
Granted: Aug 14, 1990
Filed: Jul 20, 1987
Inventors
Susumu Takahashi
Fumio Ohtomo
Assignee (at issue)
Tokyo Kogaku Kikai Kabushiki Kaisha
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.