CA994008A
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Apparatus for inspecting tubular goods
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CA991320A
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Apparatus for inspecting tubular goods
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CA977468A
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Apparatus for inspecting tubular goods
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US3855465A
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Apparatus for inspecting tubular goods
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US3339945A
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Fused tubular member and coupling arrangement
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US3331969A
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Circuit for reproduction of a plurality of similar low-level d.c. signals
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US3250404A
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Loading and ejecting mechanism
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US3287632A
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Mobile inspection device for testing metallic members for longitudinal and transverse discontinuities
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US3299349A
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Magnetic pipe inspection device with pivotally mounted sensor means
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US3299350A
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Rotating pipe inspection assembly with solenoid operated means to raise and lower the sensor means
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US3277420A
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Hydraulically operated clamping mechanism
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US3255381A
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Protective circuitry for surge generators
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US3087513A
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Retainer assembly for securing a covering on a tubular member
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US3063760A
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Drill stem protector
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