Granted Patent
Utility
US 4,670,152 · App. 06/851,288
Priming system for ultrafiltration unit
Inventor:
Ronald J. Leonard
Patented Case
View Patent ↗
Granted: Jun 2, 1987
Filed: Apr 10, 1986
Inventor
Ronald J. Leonard
Assignee (at issue)
Omnis Surgical 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.