Granted Patent
Utility
US 5,509,724 · App. 08/235,884
Multiple axle quarter frame end dump trailer
Inventors:
John Perry, Steven F. Retzloff, Jason Backs
Patented Case
View Patent ↗
Granted: Apr 23, 1996
Filed: May 2, 1994
Inventors
John Perry
Steven F. Retzloff
Jason Backs
Assignee (at issue)
Travis Body & Trailer, 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.