4. Undertaking

Egbert Broeksema

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High fidelity phonograph pick-up arm

Undertaking
Patent

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Method and device for manufacturing a plastic record carrier

Plastic article or earthenware shaping or treating: apparatus – Means applying electrical or wave energy directly to work – Radiated energy
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Method and device for manufacturing a plastics record carrier

Plastic and nonmetallic article shaping or treating: processes – Carbonizing to form article – Agglomeration or accretion
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Method of manufacturing a plastic record carrier having a strati

Plastic and nonmetallic article shaping or treating: processes – Forming sound grooves in records – Die pressing disk type records
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Optically readable information disk and method of manufacturing

Chemistry: electrical and wave energy – Processes and products – Processes of treating materials by wave energy
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Profile ID: LFUS-PAI-P-1101669

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