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Eric Hilf
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Berlin, DE
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last 30 patents
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Patent Grant
Method for managing communication sessions
Patent number
7,203,509
Issue date
Apr 10, 2007
Siemens Aktiengesellschaft
Thomas Gottschalk
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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last 30 patents
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Patent Application
Method for managing communication sessions
Publication number
20060276213
Publication date
Dec 7, 2006
Thomas Gottschalk
H04 - ELECTRIC COMMUNICATION TECHNIQUE