Granted Patent
Utility
US 6,773,658 · App. 09/889,942
Casting mould for manufacturing a cooling element and cooling element in said mould
Inventors:
Yrjö Leppänen, Pertti Mäkinen, Matti Salminen
Patented Case
View Patent ↗
Granted: Aug 10, 2004
Filed: Oct 15, 2001
Inventors
Yrjö Leppänen
Pertti Mäkinen
Matti Salminen
Assignee (at issue)
Outokumpu Oyj
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.