Granted Patent
Utility
US 6,722,152 · App. 10/429,451
Fresh air intake filter and multi function grill
Inventors:
Andreas Hille, Robert C. Reimann, Belin Czechowicz, Stephen Stopyra
Patented Case
View Patent ↗
Granted: Apr 20, 2004
Filed: May 5, 2003
Inventors
Andreas Hille
Robert C. Reimann
Belin Czechowicz
Stephen Stopyra
Assignee (at issue)
CARRIER CORPORATION
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.