Granted Patent
Utility
US 6,752,406 · App. 10/123,939
Highway/rail trailer axle/suspension lift assembly
Inventors:
Phillippi R. Pierce, Timothy Hess
Patented Case
View Patent ↗
Granted: Jun 22, 2004
Filed: Apr 16, 2002
Inventors
Phillippi R. Pierce
Timothy Hess
Assignee (at issue)
The Boler Company
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.