Author talk:William Thornton Firth

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Latest comment: 11 months ago by Noracrentiss in topic William Thornton Firth
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William Thornton Firth

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Latest comment: 11 months ago1 comment1 person in discussion

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)Reply

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