Granted Patent
Utility
US 6,515,804 · App. 09/813,816
Zoom optical system
Inventors:
Masahito Watanabe, Hirokazu Konishi, Yuji Miyauchi, Shinichi Mihara
Patented Case
View Patent ↗
Granted: Feb 4, 2003
Filed: Mar 22, 2001
Inventors
Masahito Watanabe
Hirokazu Konishi
Yuji Miyauchi
Shinichi Mihara
Assignee (at issue)
Olympus Optical Co., Ltd.
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.