Granted Patent
Utility
US 5,421,613 · App. 08/208,054
Tractor trailer
Inventors:
Blaine H. Allison, Ronald B. Gerding
Patented Case
View Patent ↗
Granted: Jun 6, 1995
Filed: Mar 8, 1994
Inventors
Blaine H. Allison
Ronald B. Gerding
Assignee (at issue)
The Heil 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.