Granted Patent
Utility
US 6,817,201 · App. 10/413,732
Hot/cold product merchandiser
Inventor:
Thomas E. Yingst
Patented Case
View Patent ↗
Granted: Nov 16, 2004
Filed: Apr 15, 2003
Inventor
Thomas E. Yingst
Assignee (at issue)
DUKE MANUFACTURING CO.
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.