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J. E. Walls
| Firmenname | J. E. Walls |
| Ortssitz | Lawrence (Mass.) |
| Art des Unternehmens | Maschinenfabrik und Kesselschmiede |
| Quellenangaben | [Wiley: American iron trade manual (1874) 33] |
| Produkt |
ab |
Bem. |
bis |
Bem. |
Kommentar |
| Dampfventile |
1874 |
[Wiley: American iron trade (1874)] |
1874 |
[Wiley: American iron trade (1874)] |
Vorgabe: "Patent steam traps and valves" |
| Dampfventile |
1874 |
[Wiley: American iron trade (1874)] |
1874 |
[Wiley: American iron trade (1874)] |
Vorgabe: "Patent steam traps and valves" |
| Kondensatableiter |
1874 |
[Wiley: American iron trade (1874)] |
1874 |
[Wiley: American iron trade (1874)] |
Vorgabe: "Patent steam traps and valves" |
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