Granted Patent
Utility
US 4,615,221 · App. 06/751,395
Triaxial compression test apparatus
Inventor:
Malcolm S. Mellor
Patented Case
View Patent ↗
Granted: Oct 7, 1986
Filed: Jul 3, 1985
Inventor
Malcolm S. Mellor
Assignee (at issue)
The United States of America as represented by the Secretary of the Army
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.