This line was produced, with some running changes, until 1989.
The model name became V-48 and it was produced until 1955.
It was first produced in the early 2000's until 2003.
The work was not produced as a stage play until 1999.
Over 2.6 million were produced until the end of production in 1986.
They continued to be produced until 1999 and many thousands are still in use.
Production of the 301 started in 1953; the 401 was produced until 1976.
It was produced until at least 1917 in small numbers.
The Model 645 was introduced in 1985, and produced until 1988.
The 401 was introduced in 1965 and produced until 1976.