Granted Patent
Utility
US 4,584,861 · App. 06/627,370
Knurling tool
Inventors:
Benjamin M. Bartilson, Richard D. Kreachbaum, Thomas A. Pettenski, John T. Voedisch
Patented Case
View Patent ↗
Granted: Apr 29, 1986
Filed: Jul 3, 1984
Inventors
Benjamin M. Bartilson
Richard D. Kreachbaum
Thomas A. Pettenski
John T. Voedisch
Assignee (at issue)
Battelle Development 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.