Granted Patent
Utility
US 4,285,136 · App. 06/112,764
Wheel clamp
Inventor:
Marshall P. Ragan
Patented Case
View Patent ↗
Granted: Aug 25, 1981
Filed: Jan 17, 1980
Inventor
Marshall P. Ragan
Assignee (at issue)
FMC CORPORATION
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.