Hindi (romanized): 8 agast, 1984 ko, you.ve.pi., ink. ne ek sterolithography nirmaan pranali ke liye you.es.4575330 ke liye ek patent aavedan daakhil kiya, jo ki pehle 3di systams korporation ke chak hal ko diya gaya tha, jisamen photopolimur ke saath atikaraman karne vaale vikiran, kan bambaari, rasinic pratikriya, yaa sirf parabangnee prakaash lezaron kaa sankalan karke alag-alag lemina yaa paraten jodi jaati hai.
English: On 8 August 1984 a patent, US4575330, assigned to UVP, Inc. and later assigned to Chuck Hull of 3D Systems Corporation, was filed for a stereolithography fabrication system, in which individual laminae or layers are added by curing photopolymers with impinging radiation, particle bombardment, chemical reaction, or just ultraviolet light lasers.