Granted Patent
Utility
US 6,012,646 · App. 09/013,283
Recirculating gear pump for vehicle heater
Inventors:
Jonathan R. Young, Bruce Wilnechenko
Patented Case
View Patent ↗
Granted: Jan 11, 2000
Filed: Jan 26, 1998
Inventors
Jonathan R. Young
Bruce Wilnechenko
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.