Granted Patent
Utility
US 4,886,156 · App. 07/144,757
Log conveyor system
Inventors:
Robert A. Records, Ralph E. Luchterhand, John Detroit
Patented Case
View Patent ↗
Granted: Dec 12, 1989
Filed: Jan 19, 1988
Inventors
Robert A. Records
Ralph E. Luchterhand
John Detroit
Assignee (at issue)
U.S. Natural Resources, Log Boss Systems Division
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.