Granted Patent
Utility
US 5,732,880 · App. 08/793,231
Heater for a vehicle powered by an internal-combustion engine
Inventors:
Herbert Langen, Peter Reiser, Dirk Brenner, Wolfgang Pfister, Walter Blaschke, Erwin Burner
Patented Case
View Patent ↗
Granted: Mar 31, 1998
Filed: Feb 6, 1997
Inventors
Herbert Langen
Peter Reiser
Dirk Brenner
Wolfgang Pfister
Walter Blaschke
Erwin Burner
Assignee (at issue)
J. Eberspaecher GmbH & Co. KG
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.