Granted Patent
Utility
US 4,759,115 · App. 06/774,128
Numerically controlled automatic tool changing machining center having a bar-type spindle
Inventor:
Ervin J. Kielma
Patented Case
View Patent ↗
Granted: Jul 26, 1988
Filed: Sep 9, 1985
Inventor
Ervin J. Kielma
Assignee (at issue)
Kearney & Trecker Corporation
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.