US 1556930 A
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Description (OCR text may contain errors)
Oct. 13 1925. H GRAU 1,556,930
ELECTRICAL HEATER F1164 July 15, 1924 engaged in the groove suificiently to space the adjacent sections of the wire and thereby leaving the major portions of the wire exposed, an insulating plate coverin the wire,
and a heating plate overlyin the insulating plate and having marginal anges embracing the non-conducting body and securing the SQVBIal parts in position.