Granted Patent
Utility
US 6,470,821 · App. 09/579,816
Method and apparatus for the evaluation of vacuum insulation panels
Inventor:
Eric Hagopian
Patented Case
View Patent ↗
Granted: Oct 29, 2002
Filed: May 26, 2000
Inventor
Eric Hagopian
Assignee (at issue)
Insulated Shipping Containers
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.