@article{PATENT,
      recid = {8876},
      title = {Mixed-mu superconducting bearings},
      number = {PATENT},
      month = {Mar},
      year = {1998},
      abstract = {A mixed-mu superconducting bearing including a ferrite  structure disposed for rotation adjacent a stationary  superconductor material structure and a stationary  permanent magnet structure. The ferrite structure is  levitated by said stationary permanent magnet structure.},
      url = {http://knowledge.uchicago.edu/record/8876},
}