Abstract
This patent application has not been assigned to a company or institution.The following quote was obtained by the news editors from the background informa tion supplied bythe inventors: “Almost every industrial plant has one or more s afety-critical and, therefore, entry-restricteddanger zones, where machines ope rate in an automated manner and where the normal operation and/oroperating erro rs and/or technical defects pose a risk to the life and limb of the operating an d maintenancepersonnel and/or a risk of damage to the production equipment.
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