Stereolithography Apparatus (SLA) Patent Application

Charles 'Chuck' Hull files U.S. Patent Application for his invention, later granted as 'Apparatus for Production of Three-Dimensional Objects by Stereolithography'. This marks the formal birth of what we now call 3D printing.

Significance

This application laid the foundational legal and technical framework for modern 3D printing, defining the core principles of additive manufacturing and paving the way for commercialization.