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World patent information
Published in World Patent Information (1995)Get additional information online
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World Patent Information
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World patent information
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Patentinformationsdienste des britischen Patentamts
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CD-ROM-produkte der weltorganisation für geistiges Eigentum (WIPO)
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Das ECLA-klassifikationssystem
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Die interne datenbank INTEL der British library
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Japanische patentinformation
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Erhebung von EPA GD1 über die recherchenqualität
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Hold the front page!
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Werbung für patente in einer britischen öffentlichen bibliothek
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Auswertung chinesischer patente nach sachgebieten entsprechend der IPC
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Informationsdienste des Britischen patentamites
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