skos:altLabel | - John Brown
- Brown - Firth Research Laboratories
- Brown Firth Laboratories
- Brown-Firth
- Brown-Firth Research Laboratories
- Brown–Firth
- Firth Brown
- Firth Brown Ltd
- Firth Brown Steels#History of Thomas Firth & Sons
- Firth-Vickers
- Firth-Vickers Stayblade
- Firths
- John Brown & Co.
- John Brown & Company
- John Brown and Co
- John Brown and Co.
- John Brown and Company
- Johnson & Firth Brown Ltd.
- T. F. Firth & Sons
- Thomas Firth
- Thomas Firth & John Brown Ltd.
- Thomas Firth & John Brown, Ltd.
- Thomas Firth & Sons
- Thomas Firth and John Brown Ltd
- Thomas Firth and John Brown, Limited
- Thos. Firth and John Brown, Ltd
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