Granted Patent
Utility
US 5,400,469 · App. 08/052,100
Lever action caster with shock absorbing spring
Inventor:
Robert J. Simonsen
Patented Case
View Patent ↗
Granted: Mar 28, 1995
Filed: Apr 22, 1993
Inventor
Robert J. Simonsen
Assignee (at issue)
FKI Industries, Inc.
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.