Granted Patent
Utility
US 6,579,054 · App. 09/908,788
Shape-modifiable transition chute for trailer tipper
Inventor:
Harlan B. Smith
Patented Case
View Patent ↗
Granted: Jun 17, 2003
Filed: Jul 18, 2001
Inventor
Harlan B. Smith
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.