Two aircraft have been built with a third one in development.
No further aircraft were built as the company went out of business.
From June 1945 until 1946, further 64 aircraft were built.
In total, 1,241 aircraft were built between December 1936 and 1940.
It was a successful design and 378 aircraft were built.
One further aircraft was later built for an order from Russia.
The design failed to better the performance and only one aircraft was built.
Series production began one year later in 1935 - 30 aircraft were built over a period of two years.
Production ended in 1961 after only 170 aircraft had been built.
Production ended in 1980 after 39 aircraft had been built.