Granted Patent
Utility
US 4,964,053 · App. 07/420,685
Self-checkout of produce items
Inventor:
David R. Humble
Patented Case
View Patent ↗
Granted: Oct 16, 1990
Filed: Oct 11, 1989
Inventor
David R. Humble
Assignee (at issue)
Checkrobot, 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.