Granted Patent
Utility
US 5,048,853 · App. 07/630,875
Four-wheel steering vehicle apparatus
Inventors:
Harlan J. Trefz, John N. Lesikar
Patented Case
View Patent ↗
Granted: Sep 17, 1991
Filed: Dec 20, 1990
Inventors
Harlan J. Trefz
John N. Lesikar
Assignee (at issue)
Noma Outdoor Products, 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.