[Trade Journal]
Publication: Electrical World
New York, NY, United States
vol. 47, no. 23, p. 1212, col. 1
821,746. INSULATOR: Augusto Richard, Milan, Italy. Appl filed Mar. 17, 1904. The insulator has a metallic post which is surrounded by a cylindrical porcelain block and which serves as a firm support for the insulator proper. The insulator is supported from the block by a washer to prevent breakage.
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821,746 - Insulator. |