4. Cleaning and liquid contact with solids
  5. Processes
  6. Using solid work treating agents

Richard W. Wellens

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Apparatus for cleaning fabrics, floor coverings, and bare...

Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Reexamination Certificate

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Cleaning head for use in a floor cleaning machine

Brushing – scrubbing – and general cleaning – Machines – Brushing
Reexamination Certificate

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Floor sweeping and scrubbing machine

Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Reexamination Certificate

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Method and apparatus for cleaning fabrics, floor coverings,...

Cleaning and liquid contact with solids – Processes – Using solid work treating agents
Reexamination Certificate

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