Power tong drive mechanism
Power tong for releasing tight joints
Power tong frames
Power tong having cam followers with sliding contact surfaces
Power tong positioning apparatus
Power tong with improved door latch
Power tong with improved door mechanism
Power tong with sliding jaw
Power tongs
Power tongs
Power tongs
Power tongs and control system
Power tongs control arrangement
Power train for horizontal earth boring machine
Power transmission system for use with downhole equipment
Power unit
Power wrench apparatus
Power-operated percussive tools
Powered back-up tongs
Powered member