Granted Patent
Utility
US 5,138,750 · App. 07/699,045
Zipper for reclosable thermoplastic bag
Inventors:
Douglas P. Gundlach, Michael J. Banco, Larry R. Erickson, Marvin J. Kreh, William A. Kirksey, William E. LeBoeuf, Kevin J. Wagers, John O. McCree, Brian C. Dais, Jose Porchia
Patented Case
View Patent ↗
Granted: Aug 18, 1992
Filed: May 13, 1991
Inventors
Douglas P. Gundlach
Michael J. Banco
Larry R. Erickson
Marvin J. Kreh
William A. Kirksey
William E. LeBoeuf
Kevin J. Wagers
John O. McCree
Brian C. Dais
Jose Porchia
Assignee (at issue)
Dowbrands L.P.
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.