Granted Patent
Utility
US 6,220,748 · App. 09/231,141
Method and apparatus for testing material utilizing differential temperature measurements
Inventor:
Calvin Bates
Patented Case
View Patent ↗
Granted: Apr 24, 2001
Filed: Jan 15, 1999
Inventor
Calvin Bates
Assignee (at issue)
ALCOA 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.