Granted Patent
Utility
US 5,219,409 · App. 07/874,648
Vacuum die casting process
Inventors:
Dave Campbell, George R. Clark, Frank W. Kenik, Russell J. VanRens
Patented Case
View Patent ↗
Granted: Jun 15, 1993
Filed: Apr 27, 1992
Inventors
Dave Campbell
George R. Clark
Frank W. Kenik
Russell J. VanRens
Assignee (at issue)
Outboard Marine 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.