Granted Patent
Utility
US 4,859,712 · App. 07/256,648
Silicone foam and method for making it
Inventor:
James E. Cox
Patented Case
View Patent ↗
Granted: Aug 22, 1989
Filed: Oct 12, 1988
Inventor
James E. Cox
Assignee (at issue)
Cox-Uphoff International
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.