4. Undertaking

Heinz Borchard

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Centering of a disc-shaped record carrier on a turntable

Dynamic information storage or retrieval – Dynamic mechanism subsystem – Specific detail of storage medium support or motion production
Patent

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Disc recording provided with legible matter

Undertaking
Patent

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Disc-shaped information carrier having a high storage density

Stock material or miscellaneous articles – Circular sheet or circular blank – Recording medium or carrier
Patent

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Method for producing a grinding foil

Abrasive tool making process – material – or composition – Impregnating or coating an abrasive tool
Patent

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Method for producing an information carrier disc

Chemistry: electrical and wave energy – Processes and products
Patent

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Profile ID: LFUS-PAI-P-476282

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