Granted Patent
Utility
US 6,523,391 · App. 09/877,812
Vertical height impact testing apparatus
Inventors:
Kenneth A. Knox, Ronald Jay Nelson, Terry L. Bellmore, Gregory Lee Carlock
Patented Case
View Patent ↗
Granted: Feb 25, 2003
Filed: Jun 8, 2001
Inventors
Kenneth A. Knox
Ronald Jay Nelson
Terry L. Bellmore
Gregory Lee Carlock
Assignee (at issue)
VARI-FORM, 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.