Granted Patent
Utility
US 6,276,496 · App. 09/038,450
Wheel chocking device
Inventors:
Martin P. Hageman, Thomas J. Palus
Patented Case
View Patent ↗
Granted: Aug 21, 2001
Filed: Mar 11, 1998
Inventors
Martin P. Hageman
Thomas J. Palus
Assignee (at issue)
Kelley Company, 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.