Granted Patent
Utility
US 4,538,490 · App. 06/490,693
Staple fiber cutter
Inventor:
Carol L. Becker
Patented Case
View Patent ↗
Granted: Sep 3, 1985
Filed: May 2, 1983
Inventor
Carol L. Becker
Assignee (at issue)
Celanese 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.