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US4187154A
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Method for manufacturing substantially flat dies
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FR2364278A1
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Gramophone record mould made in electroforming tank - where distance between cathode and anode is varied to adjust current
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DE2740210A1
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METHOD AND DEVICE FOR THE MANUFACTURING OF MATRICES AND COMPARABLE AREAS
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JPS537201A
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Method of producing player record
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FR2357356A1
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Press for record and central title label - uses galvanic deposition of impressed mould on nonconductive support
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BE769616A
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Mould elements for gramophone discs - with rigid heating and cooling element
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