Spark plug with grooved, tapered center electrode

Assignee

• General Motors

Inventors

• Ray W. Atchinson (2 patents)
• Dale Lavern Freed, Jr. (1 patents)
• John Franklin Mc Keon, Jr. (1 patents)
• Donald Robert Van Uum (3 patents)
• Charles D. Oakley (12 patents)
• Gamdur S. Mann (14 patents)
• Keith A. Penney (7 patents)

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