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Hans Riessner
Rudolf Kessel
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Common Detailed Techniques For Electron Tubes Or Discharge Tubes
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Abstract
14,152. Riessner, H., and Kessel, R. June 20. Lamp shades.- A shade a, moulded from ceramic material, is formed with a number of holes b, which are filled with glass enamel. Preferably, the calcined ceramic body is painted or: coated with aglassenamel, and subsequently glazed and-fired.
GB190614152D1906-06-201906-06-20Improvements in or relating to Lamp Shades and the like.
ExpiredGB190614152A
(en)