BUTTERFLY VALVES U.S. patents 4,964,431 (1990);4,967,778 (1990); 5,000,213 (1991); 5,005,804 (1991); 5,029,599 (1991); 5,067,506 (1991); 5,102,097 (1992); 5,113,910 (1992); and earlier ones - PowerPoint PPT Presentation

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BUTTERFLY VALVES U.S. patents 4,964,431 (1990);4,967,778 (1990); 5,000,213 (1991); 5,005,804 (1991); 5,029,599 (1991); 5,067,506 (1991); 5,102,097 (1992); 5,113,910 (1992); and earlier ones

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... PASSIVE COMPOSITE MAGNETIC BEARINGS. U.S. patents 5,270, ... PROBLEM ADDRESSED bearings with low loss, spatial stability, rigidity, and high load capacity ... – PowerPoint PPT presentation

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