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Publication of GB259288ApublicationCriticalpatent/GB259288A/en
259,288. Ferranti, S. Z. de, and Ferranti, Ltd. July 3, 1925. Transformers.- A coil bobbin is moulded from thermoplastic material with integral, spaced, radial projections and with terminal tags k embedded in thickened flange portions. Specification 248,925 is referred to.