Granted Patent
Utility
US 6,655,093 · App. 09/946,293
Riser section and cover therefor
Inventor:
Norman W. Gavin
Patented Case
View Patent ↗
Granted: Dec 2, 2003
Filed: Sep 4, 2001
Inventor
Norman W. Gavin
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.