Granted Patent
Utility
US 5,614,108 · App. 08/568,711
Method and apparatus for fast hole electrical discharge machining
Inventors:
Michael Joseph Habel, Larry A. Peterson
Patented Case
View Patent ↗
Granted: Mar 25, 1997
Filed: Dec 7, 1995
Inventors
Michael Joseph Habel
Larry A. Peterson
Assignee (at issue)
Ford Motor 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.