April 1953

April 1953: 44 companies

1 April 1953 26 companies

5 April 1953 1 companies

6 April 1953 1 companies

8 April 1953 1 companies

10 April 1953 3 companies

12 April 1953 1 companies

13 April 1953 1 companies

14 April 1953 1 companies

15 April 1953 1 companies

18 April 1953 1 companies

20 April 1953 1 companies

22 April 1953 2 companies

23 April 1953 1 companies

27 April 1953 1 companies

28 April 1953 1 companies

30 April 1953 1 companies