View Original: | US114945 - Patents for Injection Moulding by John Wesley Hyatt (Diagram 1).png (2816x2023) | |||
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Keywords: US114945 - Patents for Injection Moulding by John Wesley Hyatt (Diagram 1).png en Fig 1- The images shows billard ball made from celluloid Fig 2 - Cross section of billard balls Fig 3 - Injection moulding apparatus Fig 4 - Front view of injection moulding apparatus 1871-05-16 USPTO John Wesley Hyatt other versions PD-old-70-1923 Injection moulding Patent drawings |