Granted Patent
Utility
US 4,139,938 · App. 05/660,545
Apparatus for making slide fasteners
Inventor:
George B. Moertel
Patented Case
View Patent ↗
Granted: Feb 20, 1979
Filed: Feb 23, 1976
Inventor
George B. Moertel
Assignee (at issue)
Textron 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.