Granted Patent
Utility
US 6,019,568 · App. 09/326,970
Spill gate for trailer tipper
Inventor:
Kenneth A. Bratlie
Patented Case
View Patent ↗
Granted: Feb 1, 2000
Filed: Jun 7, 1999
Inventor
Kenneth A. Bratlie
Assignee (at issue)
Columbia Trailer Co., Inc.
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.