1
Kathleen Melanie Amm, Evangelos Trifon Laskaris, Paul Shadforth Thompson, Bulent Aksel, Bruce Campbell Amm, Michael Anthony Palmo Jr, Johannes Martinus Van Oort, Xianrui Huang: Multiple ring polefaceless permanent magnet and method of making. General Electric Company, Jason K Klindtworth, September 9, 2008: US07423431 (18 worldwide citation)

A permanent magnet assembly for an imaging apparatus having a permanent magnet body having a first surface and a stepped second surface which is adapted to face an imaging volume of the imaging apparatus, wherein the stepped second surface contains at least four steps.


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Kathleen Melanie Amm, Evangelos Trifon Laskaris, Paul Shadforth Thompson, Bulent Aksel, Bruce Campbell Amm, Michael Anthony Palmo, Johannes Martinus van Oort, Xianrui Huang: Multiple ring polefaceless permanent magnet and method of making. General Electric Company, General Electric Company, Global Research, March 31, 2005: US20050068138-A1

A permanent magnet assembly for an imaging apparatus having a permanent magnet body having a first surface and a stepped second surface which is adapted to face an imaging volume of the imaging apparatus, wherein the stepped second surface contains at least four steps.


3
Amm Kathleen Melanie, Laskaris Evangelos Trifon, Thompson Paul Shadforth: Multiple ring polefaceless permanent magnet and method of making. Gen Electric, guo dinghui huang xiaolin, April 6, 2005: CN200410082443

A permanent magnet assembly for an imaging apparatus having a permanent magnet body having a first surface and a stepped second surface which is adapted to face an imaging volume of the imaging apparatus, wherein the stepped second surface contains at least four steps.