Granted Patent
Utility
US 6,549,343 · App. 09/933,773
Intermediate telephoto lens system
Inventor:
Shuji Yoneyama
Patented Case
View Patent ↗
Granted: Apr 15, 2003
Filed: Aug 22, 2001
Inventor
Shuji Yoneyama
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.