Granted Patent
Utility
US 6,145,582 · App. 09/331,703
Heat accumulator block for regenerated heat exchanger
Inventors:
Bernd Bolle, Lothar Stufchen, Franz-Josef Hagemann, Bernd Hewing
Patented Case
View Patent ↗
Granted: Nov 14, 2000
Filed: Jun 18, 1999
Inventors
Bernd Bolle
Lothar Stufchen
Franz-Josef Hagemann
Bernd Hewing
Assignees (at issue)
STEAG GmbH
2H Kunststoff GmbH
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.