4. Optics: measuring and testing
  5. By inspection with agitation or rotation

Raymond J. De Vellis

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Alarm circuit

Communications: electrical – Audible indication – Ultrasonic pest control
Patent

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Attachment device for a decorative article

Buckles – buttons – clasps – etc. – Strap-end-attaching devices – Buckle connected
Patent

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Automatic temperature control system with manual off override fo

Stoves and furnaces – Tool having fluid fuel burner – Curling iron
Patent

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Axial fan hair dryer

Drying and gas or vapor contact with solids – Apparatus – For hair on head
Patent

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Ball point pen venting

Coating implements with material supply – Including ball – roller or endless-belt tool – Ball
Patent

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Profile ID: LFUS-PAI-P-171662

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