Granted Patent
Utility
US 4,505,415 · App. 06/420,046
Wire loop stitching machine head
Inventor:
Alfred J. Gruen
Patented Case
View Patent ↗
Granted: Mar 19, 1985
Filed: Sep 20, 1982
Inventor
Alfred J. Gruen
Assignee (at issue)
The Interlake Companies, Inc.
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.