Granted Patent
Utility
US 6,539,809 · App. 09/543,948
Test apparatus for measuring stresses and strains
Inventors:
Walter Weiss, John L. Sullivan, Jeffrey J. Bott, Jacek A. Eubig
Patented Case
View Patent ↗
Granted: Apr 1, 2003
Filed: Apr 6, 2000
Inventors
Walter Weiss
John L. Sullivan
Jeffrey J. Bott
Jacek A. Eubig
Assignee (at issue)
Testing Machines, 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.