Granted Patent
Utility
US 6,060,969 · App. 09/138,346
Contactless proximity switch
Inventors:
Erich Hufgard, Jurgen Steinkirchner, Wolfgang Clemens, Joachim Wecker
Patented Case
View Patent ↗
Granted: May 9, 2000
Filed: Aug 21, 1998
Inventors
Erich Hufgard
Jurgen Steinkirchner
Wolfgang Clemens
Joachim Wecker
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.