Limbach, Limbach & Sutton
Heatable sheet assembly
 A heatable sheet assembly comprises a sheet to be electrically heated, electrically conductive metal foils applied to both surfaces of the sheet and an electrical terminal attached to each of the metal foils. 
H H H H H H H
H05B H05B H05B H05B H05B H05B H05B
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Makoto
Nishimura