4. Facsimile and static presentation processing
  5. Static presentation processing
  6. Attribute control

Lenco, Inc.

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Arc welding gun with handle assembly

Electric heating – Metal heating – By arc
Patent

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Complementary output amplifier with an input for offsetting volt

Amplifiers – With semiconductor amplifying device – Including differential amplifier
Patent

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Control circuit for a welding device

Electric heating – Metal heating – For bonding with pressure
Patent

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Device for teaching and evaluating a person's skill as a welder

Patent

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Device for training welders

Education and demonstration – Occupation – Soldering or welding
Patent

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