Granted Patent
Utility
US 5,219,220 · App. 07/878,268
Four-film diagonal gusset seals for bags
Inventors:
Rod A. Kucera, Norman R. Youngjohn
Patented Case
View Patent ↗
Granted: Jun 15, 1993
Filed: May 4, 1992
Inventors
Rod A. Kucera
Norman R. Youngjohn
Assignee (at issue)
Mobil Oil 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.