Granted Patent
Utility
US 5,946,756 · App. 08/800,981
Molded plastic ramp
Inventor:
Mike Mapp
Patented Case
View Patent ↗
Granted: Sep 7, 1999
Filed: Feb 14, 1997
Inventor
Mike Mapp
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.