US Patent 2,130,523 Linear polyamides suitable for spinning into strong pliable fibers; US Patent 2,130,947 Diamine dicarboxylic acid salt and US Patent 2,130,948 Synthetic fibers. Trossarelli, L. (2010). "The history of nylon". Club Alpino Italiano, Centro Studi Materiali e Tecniche. Archived from the original on 2012-04-25. Retrieved 2012-02-28.
US Patent 2,130,523 Linear polyamides suitable for spinning into strong pliable fibers; US Patent 2,130,947 Diamine dicarboxylic acid salt and US Patent 2,130,948 Synthetic fibers. Trossarelli, L. (2010). "The history of nylon". Club Alpino Italiano, Centro Studi Materiali e Tecniche. Archived from the original on 2012-04-25. Retrieved 2012-02-28.