Downhole modulator apparatus

Assignee

• Sondex Wireline Limited

Inventors

• John Michael Buss (10 patents)
• Charles William Donkin (5 patents)
• Ian Hitchcock (5 patents)
• William Peter Stuart Bruges (1 patents)
• Roy Mowatt (1 patents)
• James David Ratcliffe (14 patents)
• Anthony Webb (2 patents)

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