Granted Patent
Utility
US 4,414,265 · App. 06/474,153
Insulation board
Inventors:
Dennis W. Rosato, Neil K. Lister
Patented Case
View Patent ↗
Granted: Nov 8, 1983
Filed: Mar 10, 1983
Inventors
Dennis W. Rosato
Neil K. Lister
Assignee (at issue)
Millmaster Onyx Group, 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.