Electrical heating panel

Details Electrical heating panel Electrical heating panel

1982-09-27

1984-01-31

Envall, Jr., Roy N.

Electric heating

Heating devices

Combined with container, enclosure, or support for material...

219213, 219549, 338283, H05B 318, H05B 328

Patent

active

044292147

ABSTRACT:
A gypsum wallboard with electrical heating wire disposed in grooves arranged to minimize tendencies for the board to crack when lifted by the two opposite board ends.

REFERENCES:
patent: 2619850 (1952-11-01), Poutiere
patent: 3095491 (1963-06-01), Deacon
patent: 3550267 (1970-12-01), Williams
patent: 3598960 (1971-08-01), Deacon
patent: 3686472 (1972-08-01), Harris
patent: 4160897 (1979-07-01), Makino
patent: 4386260 (1983-05-01), Zellers
patent: 4387293 (1983-07-01), Grice et al.

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