Granted Patent
Utility
US 5,559,713 · App. 08/343,652
Chip buildup detection and control method and apparatus
Inventors:
Jeffrey Brown, Dennis G. Rochon
Patented Case
View Patent ↗
Granted: Sep 24, 1996
Filed: Nov 22, 1994
Inventors
Jeffrey Brown
Dennis G. Rochon
Assignee (at issue)
Western Atlas, 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.