Granted Patent
Utility
US 6,043,894 · App. 09/113,662
Method for maintaining uniformity among color measuring instruments
Inventors:
Harold Van Aken, Ronald G. Anderson
Patented Case
View Patent ↗
Granted: Mar 28, 2000
Filed: Jul 10, 1998
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.