Communications device for a protective helmet

Assignee

• Mine Safety Appliances Company

Inventors

• Larry Depew (1 patents)
• Joseph Birli (10 patents)
• Lou Monaco (7 patents)
• Greg Skillicom (1 patents)
• Dan Zimet (1 patents)
• Dave Potts (2 patents)
• Michael Rupert (1 patents)
• John L. Hierbaum (1 patents)
• Layton A. Wise (14 patents)
• F. Joseph Hersick (8 patents)

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