Granted Patent
Utility
US 4,448,138 · App. 06/507,868
Machine for continuously folding over and stitching web edges
Inventor:
Johannes Freermann
Patented Case
View Patent ↗
Granted: May 15, 1984
Filed: Jun 24, 1983
Inventor
Johannes Freermann
Assignee (at issue)
Carl Schmale GmbH & Co.
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.