Granted Patent
Utility
US 6,047,209 · App. 09/285,427
Method and apparatus for maintenance of pierced orifices
Inventors:
Jeffrey Paul Denny, Mark A. Boys
Patented Case
View Patent ↗
Granted: Apr 4, 2000
Filed: Apr 2, 1999
Inventors
Jeffrey Paul Denny
Mark A. Boys
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.