1865. Item #54059
(SUMMIT CO-RUBBER) Hayward, Nathaniel. APPLICATION OF NATHANIEL HAYWARD FOR AN EXTENSION OF HIS PATENT, Before the Committee on Patents. Washington: Gideon & Pearson, Printers, 1865. 16p, self-wrappers, lightly soiled, vg. Hayward (1808-1865) developed a method using sulfur in rubber compounding which he sold to Charles Goodyear.