Granted Patent
Utility
US 6,826,925 · App. 10/448,623
Apparatus for collecting and purifying refrigerant in air conditioning systems
Inventor:
Marie Joseph Renders
Patented Case
View Patent ↗
Granted: Dec 7, 2004
Filed: May 30, 2003
Inventor
Marie Joseph Renders
Assignee (at issue)
North European Patents & Investments H.S.A. Societe Anonyme
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.