| Identifier | Title | Date | Level of description | Other information | |
|---|---|---|---|---|---|
| GFA 1/444 | BBC: legierte Stähle | 1924 – 1947 | File: 1 file | Standard period of protection | |
| GFA 1/446 | Bergischen Stahlindustrie (BSI): Temperguss, Glühfrischen | 1926 – 1944 | File: 1 file | Standard period of protection | |
| GFA 1/447 | Bergischen Stahlindustrie (BSI): Temperguss | 1939 – 1944 | File: 1 file | Standard period of protection | |
| GFA 1/448 | Bergischen Stahlindustrie (BSI): Temperguss, Schmelzverfahren, Panzerstahlplatten, Geschenk an Eisenbibliothek | 1937 – 1952 | File: 1 file | Standard period of protection | |
| GFA 1/449 | Bergischen Stahlindustrie (BSI): Temperguss, Glühfrischen | 1939 – 1944 | File: 1 file | Standard period of protection | |
| GFA 1/450 | Lebanon Steel Foundry, USA: Stahlguss | 1933 – 1953 | File: 1 file | vacat | Standard period of protection |
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