Granted Patent
Utility
US 6,587,281 · App. 09/878,177
Zoom image pickup optical system
Inventors:
Kouki Hozumi, Yuji Miyauchi
Patented Case
View Patent ↗
Granted: Jul 1, 2003
Filed: Jun 12, 2001
Inventors
Kouki Hozumi
Yuji Miyauchi
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.