Granted Patent
Utility
US 6,043,639 · App. 08/980,773
Method and apparatus for real-time detection of airborne conductive contaminants
Inventors:
Peter Arrowsmith, John D. Duff
Patented Case
View Patent ↗
Granted: Mar 28, 2000
Filed: Dec 1, 1997
Inventors
Peter Arrowsmith
John D. Duff
Assignee (at issue)
Celestica International 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.