A system for generating three-dimensional objects by creating a cross-sectional pattern of the object to be formed at a selected surface of a fluid medium capable of altering its physical state in response to appropriate synergistic stimulation by impinging radiation, particle bombardment or chemical...http://www.google.fr/patents/US5554336?utm_source=gb-gplus-shareBrevet US5554336 - Method and apparatus for production of three-dimensional objects by stereolithography
Method and apparatus for production of three-dimensional objects by ...
