Granted Patent
Utility
US 4,516,889 · App. 06/415,663
Precision adjustable cutting tool
Inventor:
Robert M. Ortlieb
Patented Case
View Patent ↗
Granted: May 14, 1985
Filed: Sep 7, 1982
Inventor
Robert M. Ortlieb
Assignee (at issue)
DeVlieg Machine Company
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.