Foamed, low density, highly extended unsaturated polyester resin syrup composition, a shaped article comprised of the composition and a process for preparing such article

Granted: Aug 31, 1982 Filed: Jul 9, 1981

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.