The following code samples create symbols in SVG format for some legacy symbologies.

KarTrak The KarTrak system was designed to track rail cars in North America. Technical problems with the system led to it being abandoned but symbols can still be seen on some rolling stock.
Sunburst The Sunburst symbol was one of unsuccessful applicants for the UPC standard. It was developed by Charecogn Systems Inc. and patented in 1969.
CueCat The CueCat "cue" was developed by Digital Convergence Corporation for use with their proprietary hardware in 2000. The encoding system is based on Code 128 and was soon reverse-engineered. The product was ultimately a commercial failure.