Granted Patent
Utility
US 5,435,373 · App. 08/122,999
Apparatus and method for lubricating and cleaning out die-casting equipment
Inventors:
Donald L. Drane, James R. Fields, Robert C. Wallace, Thomas J. Kasun, Robert E. Robinson
Patented Case
View Patent ↗
Granted: Jul 25, 1995
Filed: Sep 17, 1993
Inventors
Donald L. Drane
James R. Fields
Robert C. Wallace
Thomas J. Kasun
Robert E. Robinson
Assignee (at issue)
Aluminum Company of America
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.