Granted Patent
Utility
US 6,779,776 · App. 10/375,316
Intrinsically safe electrically magnetically operated hydraulic valve
Inventors:
Franz-Heinrich Suilmann, Michael Dettmers, Jens Titschert, Hans-Udo Rheiner
Patented Case
View Patent ↗
Granted: Aug 24, 2004
Filed: Feb 26, 2003
Inventors
Franz-Heinrich Suilmann
Michael Dettmers
Jens Titschert
Hans-Udo Rheiner
Assignee (at issue)
DBT 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.