Granted Patent
Utility
US 5,434,388 · App. 08/132,793
Electrical heater for media, particularly flow heater
Inventors:
Willi Kralik, Siegbert Berger, Franz Bogdanski, Peter Stupp, Werner Koegel
Patented Case
View Patent ↗
Granted: Jul 18, 1995
Filed: Oct 7, 1993
Inventors
Willi Kralik
Siegbert Berger
Franz Bogdanski
Peter Stupp
Werner Koegel
Assignee (at issue)
E.G.O. Elektro-Gerate Blanc u. Fischer
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.