Granted Patent
Utility
US 5,443,089 · App. 08/217,193
Hydraulic amplifiers with reduced leakage at null
Inventor:
Anton Haumann
Patented Case
View Patent ↗
Granted: Aug 22, 1995
Filed: Mar 23, 1994
Inventor
Anton Haumann
Assignee (at issue)
Moog Inc.
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.