Granted Patent
Utility
US 4,156,488 · App. 05/816,577
Cross-member assembly
Inventor:
Sheldon L. Stark
Patented Case
View Patent ↗
Granted: May 29, 1979
Filed: Jul 18, 1977
Inventor
Sheldon L. Stark
Assignee (at issue)
Caterpillar Tractor Co.
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.