Granted Patent
Utility
US 4,946,432 · App. 07/330,993
Device for sealing and perforating a thermoplastic film
Inventors:
Etienne Susini, Pierre Soubrier
Patented Case
View Patent ↗
Granted: Aug 7, 1990
Filed: Mar 28, 1989
Inventors
Etienne Susini
Pierre Soubrier
Assignee (at issue)
Baxter International Inc.
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.