1800

c. 1822

Spencer Richards works with Richard Robinson & Co., the glass button manufacturer founded by Enoch Robinson’s cousins Richard and Willard Robinson.

1822

Spencer Richards is awarded a patent for a process for finishing glass buttons.

1825

c. 1825

Enoch Robinson begins manufacturing door knobs and other hardware, independently and with Spencer Richards and others, in Cambridge, Massachusetts.

c. 1830

Enoch Robinson and Spencer Richards collaborate on the mold for a whale-oil lamp manufactured by the New England Glass Co.

The New England Glass Co., Manufacturer

1831

Spencer Richards: “Improvement in Making Glass Knobs“

U.S. Patent No. 6817

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