Granted Patent
Utility
US 6,359,739 · App. 09/608,009
Macro lens system
Inventor:
Takayuki Sensui
Patented Case
View Patent ↗
Granted: Mar 19, 2002
Filed: Jun 30, 2000
Inventor
Takayuki Sensui
Assignee (at issue)
Asahi Kogaku Kogyo 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.