Granted Patent
Utility
US 6,031,610 · App. 08/944,670
Multi-lobe pump for particle counters
Inventor:
Craig D. Adams
Patented Case
View Patent ↗
Granted: Feb 29, 2000
Filed: Oct 6, 1997
Inventor
Craig D. Adams
Assignee (at issue)
Pacific Scientific Instruments Company
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.