Granted Patent
Utility
US 6,502,539 · App. 09/872,728
Articulated piston having a profiled skirt
Inventors:
Carmo Ribeiro, Roberto Bueno Nigro
Patented Case
View Patent ↗
Granted: Jan 7, 2003
Filed: Jun 1, 2001
Inventors
Carmo Ribeiro
Roberto Bueno Nigro
Assignee (at issue)
Federal-Mogul Worldwide, Inc.
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.