Granted Patent
Utility
US 5,909,764 · App. 09/036,308
Vertical caster and associated method
Inventors:
Adam J. Sartschev, Joshua Liu
Patented Case
View Patent ↗
Granted: Jun 8, 1999
Filed: Mar 6, 1998
Inventors
Adam J. Sartschev
Joshua Liu
Assignee (at issue)
Aluminum Company of America
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.