Granted Patent
Utility
US 6,628,406 · App. 09/553,270
Self referencing mark independent alignment sensor
Inventor:
Justin Kreuzer
Patented Case
View Patent ↗
Granted: Sep 30, 2003
Filed: Apr 20, 2000
Inventor
Justin Kreuzer
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.