Granted Patent
Utility
US 5,927,177 · App. 09/027,427
Multi-diaphragm actuator
Inventor:
Keith Hochhalter
Patented Case
View Patent ↗
Granted: Jul 27, 1999
Filed: Feb 20, 1998
Inventor
Keith Hochhalter
Assignee (at issue)
Tolomatic, 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.