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Matti Kokkonen
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Jyvaskyla, FI
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last 30 patents
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Patent Grant
Housing for electronic communication devices
Patent number
D598012
Issue date
Aug 11, 2009
Emfit Oy
Matti Leo Kokkonen
D14 - Recording, communication, or information retrieval equipment
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Patent Grant
Amplifier
Patent number
D587239
Issue date
Feb 24, 2009
B-Band Oy
Heikki Raisanen
D14 - Recording, communication, or information retrieval equipment