Granted Patent
Utility
US 5,495,709 · App. 08/286,211
Air reservoir turbine
Inventor:
Hans Ulrich Frutschi
Patented Case
View Patent ↗
Granted: Mar 5, 1996
Filed: Aug 5, 1994
Inventor
Hans Ulrich Frutschi
Assignee (at issue)
ABB Management AG
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.