Boult, Wade, and Tennant

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Boult, Wade, and Tennant was a firm of Chartered Patent Agents in London comprising Alfred Julius Boult, the founder, with Harold Wade and William John Tennant. Their address was listed as 111/112 Hatton Garden, London, E.C.[1]

This firm still exists. See Boult Wade Tennant on English Wikipedia.[2]

"B. E. Dunbar Kilburn", that is Bertram Edward Dunbar Kilburn [3], joined the firm for a few years and apparently used the name Boult, Wade & Kilburn. Kilburn left at the beginning of 1906 (or the end of 1905) and went into practice on his own.[4]

Regarding corporate evolutions, we have cases in which the original has patent agent Alfred Julius Boult acting as applicant with Boult, Wade & Kilburn listed as patent agent.[5]


  1. Patent GB-1912-5459 document at espacenet
  2. For future patent agent templates, use Wikidata item Q56063099
  3. Patent GB-1911-8911
  4. The Electrical Review, Vol. 58, No. 1467, January 5, 1906; p. 16.
  5. Patent GB-1899-11293

Patents for which Boult & Wade was the patent agent

Patents for which Boult, Wade, and Tennant was the patent agent

Patents for which Boult, Wade & Tennant was the patent agent

Patents for which Bertram Edward Dunbar Kilburn was the patent agent