Granted Patent
Utility
US 5,477,389 · App. 08/260,837
Fast ultra-wide angle lens system
Inventors:
Takayuki Ito, Yasuyuki Sugano
Patented Case
View Patent ↗
Granted: Dec 19, 1995
Filed: Jun 16, 1994
Inventors
Takayuki Ito
Yasuyuki Sugano
Assignees (at issue)
Asahi Kogaku Kogyo Kabushiki Kaisha
Asahi Seimitsu 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.