Granted Patent
Utility
US 6,799,746 · App. 10/282,313
Electromagnet, in particular a proportional magnet for operating a hydraulic valve
Inventor:
Jens Schafer
Patented Case
View Patent ↗
Granted: Oct 5, 2004
Filed: Oct 28, 2002
Inventor
Jens Schafer
Assignee (at issue)
Ina Schaeffler KG
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.