Granted Patent
Utility
US 6,602,448 · App. 09/461,482
Graded plastic optical element and method for producing thereof
Inventor:
Victor Ilyashenko
Patented Case
View Patent ↗
Granted: Aug 5, 2003
Filed: Dec 14, 1999
Inventor
Victor Ilyashenko
Assignee (at issue)
Getronics Wang Co. LLC
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.