Granted Patent
Utility
US 6,131,919 · App. 09/344,199
Method of automatically adjusting a body of a tractor to a horizontal position and apparatus for performing the same
Inventors:
Sang Sik Lee, Kie Seok Oh
Patented Case
View Patent ↗
Granted: Oct 17, 2000
Filed: Jun 24, 1999
Inventors
Sang Sik Lee
Kie Seok Oh
Assignee (at issue)
LG Cable LTD.
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.