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DUOPHON
DUOPHON
DE
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📝 Main information
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🗂️ Details
⏳ Timelines
Main information
Brand
DUOPHON
Status
Dead
Country
Germany
Filed
1995-01-10
Expires
2015-01-10
Owner
Germany
Hermann Sewerin GbR
Agent
Germany
Loesenbeck Specht Dantz Patent- und Rechtsanwälte
Detailed trademark information
Update history
Logo history
