Granted Patent
Utility
US 6,726,021 · App. 10/085,770
Stopper debris separator
Inventors:
Patrick G. Kennedy, Keith Coffman
Patented Case
View Patent ↗
Granted: Apr 27, 2004
Filed: Feb 28, 2002
Inventors
Patrick G. Kennedy
Keith Coffman
Assignee (at issue)
MERCK & CO., 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.