Granted Patent
Utility
US 6,788,474 · App. 10/423,890
Zoom image pickup optical system
Inventors:
Kouki Hozumi, Yuji Miyauchi
Patented Case
View Patent ↗
Granted: Sep 7, 2004
Filed: Apr 28, 2003
Inventors
Kouki Hozumi
Yuji Miyauchi
Assignee (at issue)
OLYMPUS CORPORATION
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.