Granted Patent
Utility
US 5,140,727 · App. 07/688,230
Zipper for reclosable thermoplastic bag, process and apparatus for making
Inventors:
Brian C. Dais, Jose Porchia, John O. McCree, David A. Smith, Larry M. Zieke
Patented Case
View Patent ↗
Granted: Aug 25, 1992
Filed: Apr 22, 1991
Inventors
Brian C. Dais
Jose Porchia
John O. McCree
David A. Smith
Larry M. Zieke
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.