The stimulator: Rolf Stiefel, whose firm will soon be marketing a TEN, demonstrates the $250 machine – All Items – Digital Archive : Toronto Public Library
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Wärtsilä Corporation on Twitter: "#GasBassador Rolf Stiefel @WinterthurGD is a strong believer in the use of #LNG as fuel. https://t.co/zLAUinjjaK https://t.co/MA16ZbNPTB" / Twitter
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Rolf Stiefel appointed to lead Bureau Veritas M&O in key regional role based in Hamburg | Marine & Offshore
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