Marie Killick

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Marie Louise Killick (in some sources Maria) (d. 1964) was an English audio engineer who patented the truncated-tip sapphire stylus in 1945 for playing gramophone records.[1]

Following a lapse in the patent, she was involved from 1953 in a lawsuit against Pye (Killick v Pye Ltd) for their infringement of her patent. Killick won the suit in 1958,[2] but her bankruptcy in the following year prevented her from profiting from the outcome.[3][4][5]

[edit] References

  1. ^ Meridian Focus Documentary. "A Gem of an Idea", British Film Institute, 1996. 
  2. ^ "WOMAN INVENTOR WINS; Briton May Get 14 Million for Her Phonograph Stylus", New York Times, 1958-07-23, pp. 3. 
  3. ^ "Golden Dream Comes To End In Bankruptcy", Chicago Daily Tribune, 1959-09-26, pp. W_A15. 
  4. ^ Barrie Blake-Coleman. "A Gem of an Idea: Mrs Killick and the Sapphire Stylus", Inventors World Quarterly #4, Winter 1995. 
  5. ^ Barrie Blake-Coleman and Cynthia Killick. "A Gem of an Idea: Mrs. Killick and the Sapphire - Postscript", Inventors World Quarterly, 1996. 


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