Granted Patent
Utility
US 4,714,717 · App. 07/034,970
Polyester polyols modified by low molecular weight glycols and cellular foams therefrom
Inventors:
Michael E. Londrigan, Michael J. Skowronski
Patented Case
View Patent ↗
Granted: Dec 22, 1987
Filed: Apr 6, 1987
Inventors
Michael E. Londrigan
Michael J. Skowronski
Assignee (at issue)
Jim Walter Resources, 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.