Granted Patent
Utility
US 4,743,328 · App. 06/918,836
Method and apparatus for manufacturing a cushioning member
Inventor:
Gerhard Zwirner
Patented Case
View Patent ↗
Granted: May 10, 1988
Filed: Oct 14, 1986
Inventor
Gerhard Zwirner
Assignee (at issue)
Gebr. Happich GmbH
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.