Granted Patent
Utility
US 4,973,214 · App. 07/519,459
Lift arm structure for front-end loaders
Inventors:
Jesse L. Schupback, Richard D. Housman
Patented Case
View Patent ↗
Granted: Nov 27, 1990
Filed: May 7, 1990
Inventors
Jesse L. Schupback
Richard D. Housman
Assignee (at issue)
J. I. Case 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.