April 1955

April 1955: 15 companies

1 April 1955 3 companies

2 April 1955 2 companies

3 April 1955 1 companies

13 April 1955 1 companies

15 April 1955 1 companies

19 April 1955 1 companies

21 April 1955 1 companies

22 April 1955 1 companies

26 April 1955 1 companies

27 April 1955 1 companies

28 April 1955 1 companies

30 April 1955 1 companies