Granted Patent
Utility
US 4,339,945 · App. 06/202,351
Process and apparatus for testing fluids for fouling
Inventors:
James George Knudsen, Nicholas J. Brindak
Patented Case
View Patent ↗
Granted: Jul 20, 1982
Filed: Oct 30, 1980
Inventors
James George Knudsen
Nicholas J. Brindak
Assignee (at issue)
Drew Chemical 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.