Granted Patent
Utility
US 6,516,487 · App. 09/439,321
Dockleveler with a barrier
Inventor:
Denis Gleason
Patented Case
View Patent ↗
Granted: Feb 11, 2003
Filed: Nov 12, 1999
Inventor
Denis Gleason
Assignee (at issue)
Kelley Atlantic Ltd.
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.