Documents in our library describe Magna-Tones (Supradur) as “[ asbestos ] * fiber * -cement siding shingles”.1 They give it as sold from 1962.1
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What each document says
Every statement about Magna-Tones (Supradur) in the documents, in each document's own words.
USPTO trademark case files (Trademark Full Text XML Data, Annual Applications, 2025 edition)
- Sold from: “first used in commerce 1962-03-13”, said by Supradur Manufacturing Corporation, as recorded by U.S. Patent and Trademark Office1
- Description: “[ ASBESTOS ] * FIBER * -CEMENT SIDING SHINGLES”, said by Supradur Manufacturing Corporation, as recorded by U.S. Patent and Trademark Office1
Kind of product
We list Magna-Tones (Supradur) with asbestos-cement pipe, board and sheet, from how the documents describe it. That page explains how such products exposed workers.
Trades that worked with products like it: Carpenters and Construction Workers, Roofers.
Other asbestos-cement pipe, board and sheet by Supradur (13)
Asbestos-cement pipe, board and sheet by other makers (370)
Flexboard (Johns-Manville) · Thermobestos · Careytemp (Philip Carey) · Min-k (Johns-Manville) · Unibestos (Union Asbestos & Rubber Co.) · Kolormate (Nicolet) · Kon-x (Nicolet) · Korduct (Johns-Manville) · Linabestos (Asbestos Corp. of America) · Linabestos (Keasbey & Mattison) · Linalbestos (Keasbey & Mattison) · Ludlite Paneling (Allegheny Ludlum Steel) · Magno (Johns-Manville) · Marimet 45 (Johns-Manville) · Marine Acoustical Unit (Johns-Manville) · Marine Panel (Philip Carey) · Marine Veneer (Johns-Manville) · Marinite 23 (Johns-Manville) · Marinite 30 (Johns-Manville) · Marinite 36 (Johns-Manville) · and 350 more: all asbestos-cement pipe, board and sheet
References
- USPTO trademark case files (Trademark Full Text XML Data, Annual Applications, 2025 edition) (April 25, 1962). Not yet published in our library.
Cite this page
“Magna-Tones (Supradur).” AsbestosClaims.Law Library. https://asbestosclaims.law/library/products/supradur-magna-tones.
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This page is provided for general informational purposes and does not constitute legal advice. Every asbestos case turns on its own facts, exposure history, diagnosis, deadlines, available evidence, and applicable law. Reviewing this page does not create an attorney-client relationship. For advice about your specific situation, call 833-4-ASBESTOS for a free case review.