Granted Patent
Utility
US 4,698,954 · App. 06/889,551
Guide for zippered film in a form, fill and seal packaging machine
Inventors:
R. Douglas Behr, Larry M. Zieke
Patented Case
View Patent ↗
Granted: Oct 13, 1987
Filed: Jul 25, 1986
Inventors
R. Douglas Behr
Larry M. Zieke
Assignee (at issue)
THE DOW CHEMICAL COMPANY
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.