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Golf club head and method of manufacturing the same

  • US 20020025861A1
  • Filed: 05/22/2001
  • Published: 02/28/2002
  • Est. Priority Date: 08/28/2000
  • Status: Abandoned Application
First Claim
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1. A golf club head comprising a high hardness layer on front and/or rear surfaces of a face portion, the high hardness layer being constituted by a transmuted layer formed by means of electrical discharge machining.

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