Author talk:William Thornton Firth
Add topicAppearance
Latest comment: 1 year ago by Noracrentiss in topic William Thornton Firth
William Thornton Firth
[edit]William Thornton Firth was granted Patent 13086 for "AN IMPROVED PUMICE INSULATOR FOR THE EXCLUSION OF HEAT, COLD, OR SOUND" on 1901. Noracrentiss (talk) 02:14, 4 December 2023 (UTC)