Granted Patent
Utility
US 6,158,993 · App. 09/161,009
Hydraulic motor
Inventors:
Welm Friedrichsen, Tom Tychsen, Richard Entwistle, Anders Bladt, Ib Damgaard, B.o slashed.rge Duus
Patented Case
View Patent ↗
Granted: Dec 12, 2000
Filed: Sep 25, 1998
Inventors
Welm Friedrichsen
Tom Tychsen
Richard Entwistle
Anders Bladt
Ib Damgaard
B.o slashed.rge Duus
Assignee (at issue)
Danfoss Fluid Power A/S
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.