Granted Patent
Utility
US 5,932,987 · App. 09/060,524
Variable step rate precision pumping apparatus
Inventor:
Robert F. McLoughlin
Patented Case
View Patent ↗
Granted: Aug 3, 1999
Filed: Apr 14, 1998
Inventor
Robert F. McLoughlin
Assignee (at issue)
Millipore Corporation
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.