Granted Patent
Utility
US 6,681,617 · App. 10/437,642
Variable eccentric rheometer system
Inventors:
John B. Putman, Bradley HENRY, Joseph G. Bulman
Patented Case
View Patent ↗
Granted: Jan 27, 2004
Filed: May 14, 2003
Inventors
John B. Putman
Bradley HENRY
Joseph G. Bulman
Assignee (at issue)
Tech Pro, Inc.
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.