Granted Patent
Utility
US 6,580,568 · App. 09/921,897
Telephoto lens system
Inventor:
Hiroyasu Ozaki
Patented Case
View Patent ↗
Granted: Jun 17, 2003
Filed: Aug 6, 2001
Inventor
Hiroyasu Ozaki
Assignee (at issue)
Pentax 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.