Granted Patent
Utility
US 5,731,052 · App. 08/681,423
Substantially rigid thermally insulating panel and method for manufacturing it
Inventor:
Valentin Menendez Gancedo
Patented Case
View Patent ↗
Granted: Mar 24, 1998
Filed: Jul 23, 1996
Inventor
Valentin Menendez Gancedo
Assignee (at issue)
ZODIAC INTERNATIONAL
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.