| 摘要 |
536,520. Heating buildings by electricity. MUSGRAVE, J. L., and CRITTALL & CO., Ltd., R. June 7, 1940, No. 9952. [Class 39 (iii)] Panels B consisting of conductor wires embedded between insulating fabric are secured by staples or an adhesive to the plaster boards A forming a base and are covered by plaster boards D, the spaces at the edges of the panels being filled in with insulating material E. |
