License to sue some patent classes in commercial product

[Chunguang Jia]

Hi, all,

   I want to use some patented classes, such as the vtkMarchingCubes 
and the vtkDecimate in a commercial project. It is said that I should get
a license from GE. Medical. Is there any one with such experience?  Shall 
I pay some money to GE to get such a licence. 

Thanks,

Chunguang Jia
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