Granted Patent
Utility
US 4,585,024 · App. 06/644,991
Air shift conversion apparatus for manual valves
Inventor:
Alexander J. Esseniyi
Patented Case
View Patent ↗
Granted: Apr 29, 1986
Filed: Aug 28, 1984
Inventor
Alexander J. Esseniyi
Assignee (at issue)
Commercial Shearing, 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.