Granted Patent
Utility
US 5,499,413 · App. 08/235,850
Composite foam chair cushion and method
Inventor:
Hendrik R. van Hekken
Patented Case
View Patent ↗
Granted: Mar 19, 1996
Filed: Apr 29, 1994
Inventor
Hendrik R. van Hekken
Assignee (at issue)
Westinghouse Electric Company LLC
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.