Granted Patent
Utility
US 5,720,489 · App. 08/443,210
Movable subframe for tractor-trailers
Inventors:
Phillipi Randsome Pierce, Scott Dilling, John E. Ramsey
Patented Case
View Patent ↗
Granted: Feb 24, 1998
Filed: May 17, 1995
Inventors
Phillipi Randsome Pierce
Scott Dilling
John E. Ramsey
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.