Since the original Buckwalter scheme was developed, several other variants have emerged, although they are not all standardized.

In recent years, a variant of this process has emerged, producing what is sometimes called the steam bagel.

The first variant, called the T 1, emerged from a joint project with the firm of Krauss in their railway company's own workshop.

As the school bus evolved from a primarily rural form of transportation to something used in both urban and suburban population centers, two new variants emerged.

A new pattern or variant would emerge in some number of cases.

During its ten-year model run, between 1958 and 1968, the Travel Air saw four distinct variants emerge.

At this point, a new variant of malaria would emerge and the group's research using the chromosome-transfer technique would advance even further.

However, many badware variants have emerged after that and they connect to other malicious servers via iframe code.

In the 1990s, new variants in the standard pad emerged as the number of suppliers rapidly increased due to demand.

During the rest of the 1950s three major variants emerged, the C-1 Trader being one of them.