Granted Patent
Utility
US 5,640,737 · App. 08/500,574
Multi-component sponge
Inventor:
John W. Boggs
Patented Case
View Patent ↗
Granted: Jun 24, 1997
Filed: Jul 11, 1995
Inventor
John W. Boggs
Assignee (at issue)
Foam Design 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.