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