Disc record with tapered groove

Assignee

• Rca

Inventors

• Edward J. Freeman (4 patents)
• John Economou (2 patents)
• John G. Pecorari (1 patents)
• Gunter John (8 patents)
• Jerome Barth Halter (1 patents)
• Jack E. James (6 patents)
• Richard M. Castle (4 patents)
• Richard C. Palmer (9 patents)

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