Heating sheet

Electric heating – Heating devices – With heater-unit housing – casing – or support means

Patent

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Details

219345, 219549, 338212, H05B 336

Patent

active

045741867

ABSTRACT:
A heating sheet is provided in which protective covers are laminated to both surfaces of a heating element in which plastic sheets are respectively formed on the two surfaces of a metal foil heating circuit. The protective covers are adhered to the heater element such that indentations or recesses may be formed in those portions of the protective covers which do not correspond to the heating circuit.

REFERENCES:
patent: 3213521 (1965-10-01), Owers
patent: 3215574 (1965-11-01), Korb
patent: 3423574 (1969-01-01), Shomphe et al.
patent: 3539767 (1970-11-01), Eisler
patent: 3584198 (1971-06-01), Doi et al.
patent: 3749886 (1973-07-01), Michaelsen
patent: 4220848 (1980-09-01), McMullan et al.
patent: 4293763 (1981-10-01), McMullan

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