Granted Patent
Utility
US 4,388,366 · App. 06/390,249
Insulation board
Inventors:
Dennis W. Rosato, Neil K. Lister
Patented Case
View Patent ↗
Granted: Jun 14, 1983
Filed: Jun 21, 1982
Inventors
Dennis W. Rosato
Neil K. Lister
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.