Granted Patent
Utility
US 6,667,836 · App. 09/838,059
High performance viewfinder eyepiece with a large diopter focus range
Inventor:
Iain A. Neil
Patented Case
View Patent ↗
Granted: Dec 23, 2003
Filed: Apr 19, 2001
Inventor
Iain A. Neil
Assignee (at issue)
Panavision, Inc.
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.