Granted Patent
Utility
US 4,521,911 · App. 06/568,894
Bulk container
Inventor:
Robert L. Vance
Patented Case
View Patent ↗
Granted: Jun 4, 1985
Filed: Jan 6, 1984
Inventor
Robert L. Vance
Assignee (at issue)
St. Regis 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.