Granted Patent
Utility
US 6,712,283 · App. 10/338,505
Heating apparatus and housing for a heating apparatus
Inventor:
Michael Humburg
Patented Case
View Patent ↗
Granted: Mar 30, 2004
Filed: Jan 8, 2003
Inventor
Michael Humburg
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.