4. Geometrical instruments
  5. Straight-line light ray type
  6. Alignment device

William A. Danchuk

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Adjustable dual action switch

Electricity: circuit makers and breakers – Multiple circuit control – Pivoted contact
Patent

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Automatic roof bolting drill retention apparatus

Cutlery
Patent

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Child-proof lid and pail arrangement

Receptacles – Closures – Removable closure guided in rotary movement
Patent

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Continuous caster alignment method

Metal working – Method of mechanical manufacture – With testing or indicating
Patent

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Continuous caster-alignment apparatus

Geometrical instruments – Straight-line light ray type – Alignment device
Patent

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Profile ID: LFUS-PAI-P-244435

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