Granted Patent
Utility
US 5,889,619 · App. 08/786,899
Zoom lens system
Inventors:
Hiroyasu Ozaki, Takayuki Ito
Patented Case
View Patent ↗
Granted: Mar 30, 1999
Filed: Jan 23, 1997
Inventors
Hiroyasu Ozaki
Takayuki Ito
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.