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Power tong drive mechanism

E - Fixed Constructions – 21 – B
Patent

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Power tong for releasing tight joints

E - Fixed Constructions – 21 – B
Patent

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Power tong frames

E - Fixed Constructions – 21 – B
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Power tong having cam followers with sliding contact surfaces

E - Fixed Constructions – 21 – B
Patent

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Power tong positioning apparatus

E - Fixed Constructions – 21 – B
Patent

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Power tong with improved door latch

E - Fixed Constructions – 21 – B
Patent

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Power tong with improved door mechanism

E - Fixed Constructions – 21 – B
Patent

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Power tong with sliding jaw

E - Fixed Constructions – 21 – B
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Power tongs

E - Fixed Constructions – 21 – B
Patent

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Power tongs

E - Fixed Constructions – 21 – B
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Power tongs

E - Fixed Constructions – 21 – B
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Power tongs and control system

E - Fixed Constructions – 21 – B
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Power tongs control arrangement

E - Fixed Constructions – 21 – B
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Power train for horizontal earth boring machine

E - Fixed Constructions – 21 – B
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Power transmission system for use with downhole equipment

E - Fixed Constructions – 21 – B
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Power unit

E - Fixed Constructions – 21 – C
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Power wrench apparatus

E - Fixed Constructions – 21 – B
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Power-operated percussive tools

E - Fixed Constructions – 21 – B
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Powered back-up tongs

E - Fixed Constructions – 21 – B
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Powered member

E - Fixed Constructions – 21 – B
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