Granted Patent
Utility
US 5,390,902 · App. 08/142,288
Belt for sealing a pouring tube
Inventor:
Stanislav Szadkowski
Patented Case
View Patent ↗
Granted: Feb 21, 1995
Filed: Nov 19, 1993
Inventor
Stanislav Szadkowski
Assignee (at issue)
International Industrial Engineering, S.A.
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.