The Reader’s Notebook: Chester Greenwood
December 4, 2017 — Chester Greenwood, of Farmington, Maine, invented the earmuff in 1873, at the age of 15. He reportedly came up with the idea while…
PatentYogi
December 4, 2017 — Chester Greenwood, of Farmington, Maine, invented the earmuff in 1873, at the age of 15. He reportedly came up with the idea while…