Granted Patent
Utility
US 6,528,930 · App. 09/660,318
Conductive focus waffle
Inventors:
David Chang, Arthur J. Learn, Bob Lee Mackey, Paul M. Drumm, David L. Morris
Patented Case
View Patent ↗
Granted: Mar 4, 2003
Filed: Sep 12, 2000
Inventors
David Chang
Arthur J. Learn
Bob Lee Mackey
Paul M. Drumm
David L. Morris
Assignee (at issue)
Candescent Intellectual Property Services, Inc.
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.