Granted Patent
Utility
US 4,719,690 · App. 06/875,859
Tool-changing device for a machine tool
Inventor:
Otto Eckle
Patented Case
View Patent ↗
Granted: Jan 19, 1988
Filed: Jun 18, 1986
Inventor
Otto Eckle
Assignee (at issue)
Komet Stahlhalter-und Werkzeugfabrik Robert Breuning 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.