Granted Patent
Utility
US 5,312,641 · App. 07/944,541
Non-spread peanut butter slices and method of making
Inventor:
Ruben Rolando Castillo, Jr.
Patented Case
View Patent ↗
Granted: May 17, 1994
Filed: Sep 14, 1992
Inventor
Ruben Rolando Castillo, Jr.
Assignee (at issue)
Celso Rodriguez
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.