Granted Patent
Utility
US 6,712,869 · App. 10/083,954
Exhaust aftertreatment device with flow diffuser
Inventors:
C. Raymond Cheng, Z. Gerald Liu, Randolph G. Zoran
Patented Case
View Patent ↗
Granted: Mar 30, 2004
Filed: Feb 27, 2002
Inventors
C. Raymond Cheng
Z. Gerald Liu
Randolph G. Zoran
Assignee (at issue)
Fleetguard, 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.