signalling letters patent
- Made:
- 1875
Letters patent of William Nickson Haggard, of Haggard Bros & Co, Tea Merchants, 3 & 4 Fowkes Buildings, London for his invention of "Improvements in Electro-magnetic signalling apparatus", with seal, 18 March 1875.
Details
- Category:
- Archive Collections
- Object Number:
- 1998-9552/2
- type:
- letters patent
- credit:
- Ruffell, Mrs B.L.
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