4. Electric lamp and discharge devices
  5. With luminescent solid or liquid material
  6. With gaseous discharge medium

Jan Olsfors

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Field emission cathode and a light source including a field emis

Electric lamp and discharge devices – With luminescent solid or liquid material – With gaseous discharge medium
Patent

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Light source including a field emission cathode, and a field emi

Electric lamp and discharge devices – With luminescent solid or liquid material – With gaseous discharge medium
Patent

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Tangential pick-up device for a gramophone turn-table

Dynamic information storage or retrieval – Dynamic mechanism subsystem – Having power driven transducer assembly
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Tangential pick-up device for a gramophone turn-table

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Profile ID: LFUS-PAI-P-652572

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