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

Fred Hoffman

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Air dryer mounting assembly

Drying and gas or vapor contact with solids – Process – With contacting of material treated with solid or liquid agent
Reexamination Certificate

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Assembling electric motors with reduced end-play

Electrical generator or motor structure – Dynamoelectric – Rotary
Patent

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Means for assembling electric motors with reduced end-play

Metal working – Means to assemble or disassemble – Means to assemble electrical device
Patent

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Methods of assembling electric motors with reduced end-play

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

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Pressure control valve

Fluid handling – Line condition change responsive valves – Direct response valves
Reexamination Certificate

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Profile ID: LFUS-PAI-P-170340

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