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Application filed by Ove Helge Poulsen, Christian Jesper E SoennichsenfiledCriticalOve Helge Poulsen
Priority to DK443846ApriorityCriticalpatent/DK70579C/da
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DK443846A1946-11-121946-11-12Mekanisme til udløselig fastholdelse af papirsark på et underlag, navnlig skriveunderlag til bogføring med løse blade.
DK70579C
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