Description     Claims     Drawing  

US6058729A   [0006] 
US7114349B   [0006] 
US6694750B   [0007] 
US5174123A   [0008] 
US6385980B   [0008] 
US3848422A   [0009] 
US5103652A   [0009] 
JP58049866B   [0009] 
JP1318860A   [0009] 
JP4263746B   [0009]