Granted Patent
Utility
US 6,814,041 · App. 10/355,502
Multi-frequency engine intake resonator
Inventors:
C. Raymond Cheng, Jeffrey A. Rech
Patented Case
View Patent ↗
Granted: Nov 9, 2004
Filed: Jan 31, 2003
Inventors
C. Raymond Cheng
Jeffrey A. Rech
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.