Granted Patent
Utility
US 5,730,589 · App. 08/673,529
Hydraulic displacement machine having gears pressed toward each other
Inventors:
Fred Rausch, Horst Weidhaas
Patented Case
View Patent ↗
Granted: Mar 24, 1998
Filed: Jul 1, 1996
Inventors
Fred Rausch
Horst Weidhaas
Assignee (at issue)
John S. Barnes 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.