4. Expansible chamber devices
  5. Plural unitarily mounted cylinders or frame therefor
  6. Coaxial cylinders

Larry C. Mefferd

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Continuous soil sampling system and method

Boring or penetrating the earth – Processes – Sampling of earth formations
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Means and method for preparing a container for recycling

Expansible chamber devices – Plural unitarily mounted cylinders or frame therefor – Coaxial cylinders
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Profile ID: LFUS-PAI-P-1619376

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