Granted Patent
Utility
US 5,857,348 · App. 08/578,563
Compressor
Inventor:
Ronald David Conry
Patented Case
View Patent ↗
Granted: Jan 12, 1999
Filed: Mar 8, 1996
Inventor
Ronald David Conry
Assignee (at issue)
Multistack International Limited
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.