20.09.1926 31, 25, 332
11.10.1926 31, 28, 371
20.12.1926 31, 38, 498
20.12.1926 31, 38, 500
20.12.1926 31, 38, 502
20.12.1926 31, 38, 510
20.12.1926 31, 38, 511
18.07.1927 32, 16, 208
22.08.1927 32, 21, 278
12.09.1927 32, 24, 323
17.06.1929 34, 12, 134
12.06.1932 37, 11, 131
Erfinder / Entdecker / Pionier