Granted Patent
Utility
US 5,186,707 · App. 07/615,955
Electrostatic pinning in a process for gusseting film web
Inventor:
Raymond D. Barta
Patented Case
View Patent ↗
Granted: Feb 16, 1993
Filed: Nov 20, 1990
Inventor
Raymond D. Barta
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.