4. Metal working
  5. Method of mechanical manufacture
  6. Electrical device making

Lyman O. Nielson

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Low-voltage lighting apparatus for satisfying after-hours...

Illumination – Automatic substitution of power supply or light source
Reexamination Certificate

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Method of retrofitting fluorescent light fixtures and punch and

Metal working – Method of mechanical manufacture – Electrical device making
Patent

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Profile ID: LFUS-PAI-P-418049

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