Granted Patent
Utility
US 5,207,147 · App. 07/779,728
Method for the manufacture of a piston head having a cooling chamber and piston head obtained from said method
Inventors:
Jose M. M. Leites, Jose A. C. Mendes, Andre Lippai
Patented Case
View Patent ↗
Granted: May 4, 1993
Filed: Oct 17, 1991
Inventors
Jose M. M. Leites
Jose A. C. Mendes
Andre Lippai
Assignee (at issue)
Metal Leve S/A Industria E Comercio
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.