4. Liquid purification or separation
  5. Processes
  6. Treatment by living organism

Schramm, Inc.

Corporate Assignee

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Air diffusers

Liquid purification or separation – With means to add treating material – Directly applied to separator
Patent

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Air trap

Gas and liquid contact apparatus – Fluid distribution – Valved
Patent

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Drilling apparatus

Boring or penetrating the earth – With orienting or racking means for unconnected tools or...
Patent

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Earth drill

Machines not elsewhere specified – Agricultural or construction machinery – Drilling – mining – or soil treatment
Design Patent

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Electronically controlled earth drilling rig

Boring or penetrating the earth – Automatic control – Of advance or applied tool weight
Reexamination Certificate

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Profile ID: LFUS-PAI-P-356625

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