Granted Patent
Utility
US 4,530,877 · App. 06/454,430
Fire resistant foam insulated building panels
Inventor:
John F. Hadley
Patented Case
View Patent ↗
Granted: Jul 23, 1985
Filed: Dec 29, 1982
Inventor
John F. Hadley
Assignee (at issue)
Cyclops Corporation
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.