Granted Patent
Utility
US 6,112,522 · App. 09/189,186
Total flow liquid piston engine
Inventor:
Harlow Wright
Patented Case
View Patent ↗
Granted: Sep 5, 2000
Filed: Nov 10, 1998
Inventor
Harlow Wright
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.