Granted Patent
Utility
US 6,789,778 · App. 09/719,674
Electromagnetic valve
Inventors:
Wolfgang Spahn, Klemens Strauss
Patented Case
View Patent ↗
Granted: Sep 14, 2004
Filed: Mar 26, 2001
Inventors
Wolfgang Spahn
Klemens Strauss
Assignee (at issue)
Hydraulik-Ring GmbH
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.