Granted Patent
Utility
US 5,347,399 · App. 07/964,439
Zoom lens system
Inventors:
Shuji Yoneyama, Takayuki Sensui
Patented Case
View Patent ↗
Granted: Sep 13, 1994
Filed: Oct 21, 1992
Inventors
Shuji Yoneyama
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.