Granted Patent
Utility
US 5,724,193 · App. 08/546,960
Super wide angle zoom lens
Inventor:
Jun Hirakawa
Patented Case
View Patent ↗
Granted: Mar 3, 1998
Filed: Oct 23, 1995
Inventor
Jun Hirakawa
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.