Granted Patent
Utility
US 4,293,580 · App. 06/096,889
Frozen fruit and vegetable juices
Inventor:
Irving H. Rubenstein
Patented Case
View Patent ↗
Granted: Oct 6, 1981
Filed: Nov 23, 1979
Inventor
Irving H. Rubenstein
Assignee (at issue)
Maryland Cup 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.