Granted Patent
Utility
US 4,239,907 · App. 06/003,236
Preparation of low viscosity polyether polyols
Inventor:
William C. Bedoit, Jr.
Patented Case
View Patent ↗
Granted: Dec 16, 1980
Filed: Jan 15, 1979
Inventor
William C. Bedoit, Jr.
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.