Granted Patent
Utility
US 5,330,265 · App. 08/107,402
Apparatus and apparatus for mixing and cooling molding sand
Inventors:
James P. Keating, Jr., Leslie C. Knopp
Patented Case
View Patent ↗
Granted: Jul 19, 1994
Filed: Aug 16, 1993
Inventors
James P. Keating, Jr.
Leslie C. Knopp
Assignee (at issue)
Hartley Controls 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.