4. Photography and optical equipment
  5. Projector or viewer
  6. With provision for transparency magazine

Wilhelm Pramstraller

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Illuminating apparatus with a light control channel for photogra

Photocopying – Projection printing and copying cameras – Illumination systems or details
Patent

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Photographic enlarging apparatus

Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent

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Profile ID: LFUS-PAI-P-605952

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