Granted Patent
Utility
US 5,887,540 · App. 08/993,366
Hinged stairway system for water vehicles
Inventor:
Ted Krish, Jr.
Patented Case
View Patent ↗
Granted: Mar 30, 1999
Filed: Dec 18, 1997
Inventor
Ted Krish, Jr.
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.