Granted Patent
Utility
US 5,897,306 · App. 08/842,895
Partition and pilot ring for scroll machine
Inventor:
Norman G. Beck
Patented Case
View Patent ↗
Granted: Apr 27, 1999
Filed: Apr 17, 1997
Inventor
Norman G. Beck
Assignee (at issue)
Copeland LP
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.