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DK128660A1959-04-161960-04-04Anordning ved elektriske kogeplader for fastholdelse og centrering af pladen over et kogehul i en komfurplade.
DK99599C
(da)
Fremgangsmåde til perforering af elektrostencil samt anordning ved apparat til elektrisk perforering af elektrostencil i overensstemmelse med fremgangsmåden.