Granted Patent
Utility
US 6,727,950 · App. 09/387,495
Focusing device for digital camera including contrast calculator
Inventor:
Masahiro Nakata
Patented Case
View Patent ↗
Granted: Apr 27, 2004
Filed: Sep 1, 1999
Inventor
Masahiro Nakata
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.