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US4083076A
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Pipeline pig with longitudinally incompressible member
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ES444216A3
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Improvements in tacos to clean pipes. (Machine-translation by Google Translate, not legally binding)
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CA944109A
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Pipeline pig or swipe
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US3879790A
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Pipe line pig
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DE2059083A1
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Foamed polyurethane pipeline pig
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GB1270378A
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Foamed plastic pig for pipe lines
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GB1261043A
|
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Pipe line cleaning device
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US3543323A
|
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Foamed plastic pig for pipe lines
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US3605159A
|
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Pipe line pig or swipe
|
|
US3484886A
|
|
Pipeline pig
|
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US3541628A
|
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Rotatable pig for pipe lines
|
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US3474479A
|
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Pipeline cleaning device
|
|
US3460180A
|
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Internal cleaning device for pipe lines
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US3204274A
|
|
Pipe line plug device
|
|
CA902307A
|
|
Pipe line cleaning device
|
|
BE759631A
|
|
Foamed polyurethane pipeline pig
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CA802674A
|
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Pipe line plug device
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CA911115A
|
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Foamed plastic pig for pipe lines
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