Granted Patent
Utility
US 6,589,027 · App. 10/161,370
Double acting reciprocating motor with uni-directional fluid flow
Inventors:
Mihai Ursan, David Andrew Lew
Patented Case
View Patent ↗
Granted: Jul 8, 2003
Filed: Jun 3, 2002
Inventors
Mihai Ursan
David Andrew Lew
Assignee (at issue)
Westport Research 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.