Granted Patent
Utility
US 6,184,944 · App. 09/191,768
Optical fluid for projection prism
Inventor:
Craig P. Stephens
Patented Case
View Patent ↗
Granted: Feb 6, 2001
Filed: Nov 13, 1998
Inventor
Craig P. Stephens
Assignee (at issue)
Victor Company of Japan, Ltd.
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.