On 30 December 1920 about 20 companies were established in Belgium.
0411.735.207
0411.735.306
0411.735.405
0411.735.801
0411.736.195
0411.736.294
0411.736.393
0411.736.492
0411.736.888
0411.736.987
0411.737.086
0411.737.185
0411.737.284
0411.737.383
0411.737.482
0411.737.581
0411.735.702
0411.735.997