Granted Patent
Utility
US 6,422,256 · App. 09/722,937
Fluid flow controlling
Inventors:
Richard D. Balazy, Cathy L. Cowan, Mark R. Eisenmann, Kenneth E. Frink, Edward Kulha
Patented Case
View Patent ↗
Granted: Jul 23, 2002
Filed: Nov 27, 2000
Inventors
Richard D. Balazy
Cathy L. Cowan
Mark R. Eisenmann
Kenneth E. Frink
Edward Kulha
Assignee (at issue)
Mott Metallurgical 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.