Granted Patent
Utility
US 5,992,231 · App. 09/031,690
Apparatus for measuring the quality of a fluid in a vessel
Inventors:
Richard Mulder, Comelis W. P. Schoenmakers, Marian Jozef Walter Slezak
Patented Case
View Patent ↗
Granted: Nov 30, 1999
Filed: Feb 27, 1998
Inventors
Richard Mulder
Comelis W. P. Schoenmakers
Marian Jozef Walter Slezak
Assignee (at issue)
Meridian Instruments B.V.
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.