Granted Patent
Utility
US 5,199,480 · App. 07/874,740
Sealed shot sleeve for vacuum die casting
Inventors:
Thornton E. Schultz, LaVerne D. Smith, Russell J. VanRens
Patented Case
View Patent ↗
Granted: Apr 6, 1993
Filed: Apr 27, 1992
Inventors
Thornton E. Schultz
LaVerne D. Smith
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.