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Inventor
LEUSCHNER KLAUS
DE
2 patents
Patents
2 patents
US7617019B2
Nov 10, 2009
Ventilation device
SIEMENS AG
9 citations
75
US7707646B2
Apr 27, 2010
Method for licensing and/or authorizing access to software modules in a switching device
SIEMENS AG
3 citations
57