Granted Patent
Utility
US 5,729,949 · App. 08/709,634
Slab on grade chair
Inventor:
G. Douglas Hartzheim
Patented Case
View Patent ↗
Granted: Mar 24, 1998
Filed: Sep 9, 1996
Inventor
G. Douglas Hartzheim
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.