4. Brushing, scrubbing, and general cleaning
  5. Implements
  6. Pipe, tube, or conduit cleaner

Lawrence F. Irwin

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Backflow prevention device

Fluid handling – Line condition change responsive valves – Direct response valves
Patent

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Drain cleaning apparatus

Brushing – scrubbing – and general cleaning – Implements – Pipe – tube – or conduit cleaner
Patent

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Drain sealing apparatus

Receptacles – Closures – External and internal bar or closure
Patent

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Drain sealing apparatus

Baths – closets – sinks – and spittoons – Drain – overflow or trap for a sink or bath – Overflow opening attachment
Patent

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Foot switch safety enclosure

Electricity: circuit makers and breakers – Foot operated
Patent

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Profile ID: LFUS-PAI-P-2584

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