9 optical apparatus and instruments for medical, physical, chemical and biological purposes; measuring apparatus and instruments for medical, physical, chemical and biological purposes; signaling apparatus and instruments for medical, physical, chemical and biological purposes; apparatus and instruments for medical, physical, chemical and biological research; video frequency apparatus; blank magnetic data carriers; magnetic media carrying computer programs for data processing computers; database processing software for medical, chemical, physical, and biological purposes; spreadsheet software for medicinal, chemical, physical, and biological purposes; computers