Granted Patent
Utility
US 4,971,215 · App. 06/710,942
Nesting drums
Inventor:
Cesar Santoni
Patented Case
View Patent ↗
Granted: Nov 20, 1990
Filed: Mar 13, 1985
Inventor
Cesar Santoni
Assignee (at issue)
Grief Brothers 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.