Granted Patent
Utility
US 5,376,255 · App. 08/119,602
Gas sensor
Inventors:
Walter Gumbrecht, Wolfgang Schelter, Siegrun Lang
Patented Case
View Patent ↗
Granted: Dec 27, 1994
Filed: Sep 10, 1993
Inventors
Walter Gumbrecht
Wolfgang Schelter
Siegrun Lang
Assignee (at issue)
Siemens Aktiengesellschaft
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.