Granted Patent
Utility
US 6,559,944 · App. 09/484,558
Method for maintaining uniformity among color measuring instruments
Inventors:
Harold Van Aken, Ronald G. Anderson
Patented Case
View Patent ↗
Granted: May 6, 2003
Filed: Jan 18, 2000
Inventors
Harold Van Aken
Ronald G. Anderson
Assignee (at issue)
GretagMacbeth, 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.