United States patent 1600494
Legal full-text edition
United States patent 1600494
Rights
Public-domain status shown for US. Wikisource marks this text PD-USGov; publication year 1926 is within the US public-domain cutoff
Public-domain status shown for US. Wikisource marks this text PD-USGov; publication year 1926 is within the US public-domain cutoff